Recommend me an RPG

I noticed that Epic Battle Fantasy 3 came out on Steam recently.
Doesn't sound like it would be your kind of thing, but it's free - so worth mentioning so you can check/try it out, see if you'd like it, and ditch it if you don't.
No romance, some fan service things, overall silly/nonsensical feel to the game. You might have to restart some of the boss fights but from what I remember (maybe three years ago), the difficulty should be reasonable.

Played it a really long time ago on a flash game site and thought it was really well made (for a free game) - installed it yesterday and looking forward to playing it sometime in the near future.

Divine Divinity is one of my personal faves! played it for like 80 hours
it's a Diablo-esque RPG with more open world and open questing than Diablo itself, and is filled with humour
also it's cheap and there's a magic statue that can turn you into a kitten

on Deus Ex: personally I wait until games are priced at much more reasonable amounts before buying them unless I'm very confident I'll like it and want to try it out asap, which is usually only the case with long-awaited sequels in game series I really like
so I'd say it depends on how much you like Deus Ex

Arcanum: Of Steamworks and Magick Obscura? It is now on steam. :)

I notice you have Divinity: Original Sin but have only played 5 hours. Did you not care for it? I personally think it's an amazing game.

The game of thrones (not telltale) has a nice story, but the gameplay it's weak, if you like asoiaf you should play it

Morrowind was a fantastic game and is easily obtainable at a good price from either Steam or GOG.

Take a look at Avernum. I know you aksed for first person, but still these games are all lore and story :)

With the ones You have I'd install Sacred 2 and Fable.

Baldur's Gate 1 and 2, Icewind Dale, Wasteland 2.
I'd also recommend Neverwinter Nights 1 and 2 and Planescape, but those aren't on Steam at the moment.

Do I get it corrently you already played Enderal?
You... didn't play SWKOTOR? D:
Oh, and while I'd say Oblivion is worse than Morrowind, it's still very much worth playing.

You own Alpha Protocol but only played it half an hour. Its a good Action/Espionage/RPG Mix.
Same goes for Banner Saga, nice Tactic RPG with a good story.

Gothic/Gothic II if you want to try out a classic RPG (and havent already, because that game was released before Steam was there).
Same for Beyond Good and Evil

Tales of Zestiria maybe, there's a little bit of fanservice with the DLCs, but without them there's none ( at least I don't recall any, which, for a Tales of game, is common )

Hum as I just finished Dragon's Dogma in a gaming marathon, I would recommend that. But I know it's kind of weird and difficult to compare to games like skyrim, the witcher or dark souls. Still, it might be worthwhile checking it out!?

Fallout 1-2

Highly recommended by me:

My favorites:
{
Witcher 1, 2, 3
Gothic 1, 2, 3
Risen 1, 3
Two Worlds 1, 2
Moon Hunters
}

Hyper Light Drifter
Dark Messiah of Might and Magic
Arx Fatalis
Grim Dawn
Mount & Blade series
Darkest Dungeon
RAGE( Post-apocalyptic)
The Elder Scrolls series ¯_(ツ)_/¯

Highly recommended by People:

The Banner Saga
Shadow of Mordor
Pillars of Eternity
Divinity series
Hand of Fate
Mass Effect series (sci-fi)
Dead Island series (modern time)
Shadowrun series (cyberpunk)
Borderlands series (sci-fi)
Dishonored(steampunk)

Sorry for a bad design, must be not so easy to read =\

Did you try Caesar 4 and Age of Mythology series?

I don't know what to recommend that you don't already have. I prefer isometric style party based RPGs, but Fallout New Vegas was the first, first person RPG I really enjoyed. Edit Again: I take that back, the original Deus Ex was the first, first person RPG I enjoyed. If you count the old AD&D Gold Box games where the adventuring takes place in first person but the combat is from a top-down, tile based perspective, then that would be the first. I don't like third person that much, but maybe try the Witcher series. I have all of them on GOG, but I haven't played them yet.

Did you not like Pillars of Eternity? It has a lot of story, lore and dialog. I played several hours of it offline when my internet was down one weekend. I really liked it, but I decided to hold off until I had time to devote to it.

I saw your comment above about Divinity: Original Sin, and I can understand. I started out playing with a friend, but he moved and we couldn't get our timing right to get back to it. I've started twice playing with my niece, but she's never played an RPG before and wants to break into every locked door, get into fights and not doesn't pay attention to the quests or what people say when she talks to them. I started a solo game a while back, but it's not the same once you've played it coop, so I've never gotten very far.

The new Deus Ex is OK, but I haven't been impressed with any of the dialog yet. So far all of the dialog options are just asking for more information, not making actual choices. I'm still in the starting hub area, so maybe it opens up later. I keep getting distracted. So many of the NPC citizens just ask to be punched in the face, and then I end up fighting off the cops. I'm trying to play non-lethal, so after I've scratched my violence itch, I have to reload and get serious again.

EDIT: Check out Dex. It's a side scrolling RPG. I thought it looked interesting, so I picked it up during the Summer sale.

Deus Ex is indeed worth it, play "Deus Ex: Human Revolution" first and see if you like the gameplay and story, because it is pretty much the same but improved on almost every single aspect, not to mention that HR takes place before MD.

I see you have Dragon Age: Origins, which is a fantastic game. I'd also recommend Dragon Age: Inquisition, though that's just on Origin, not Steam.

From what you have ans still not played: Legend of grimlock, bioshock 2, divinity II, eschalon, fable. kult heretic kingdoms, then elderscrolls morrowind and oblivion.

from what you dont have: system shock (1 and 2), underrail, lords of xulima.

well if you have a ps 3 i recommend ni no kuni

SW:TOR. I know it is an MMO but it plays best as a single player rpg. The questlines are awesome, it's Star Wars and it's free* :D.

The Banner Saga (which you idled?) is one that I strongly recommend giving a go and Valkyria Chronicles is another. South Park: The Stick of Truth is a bit short for an rpg and the humor may not be for everyone, but I really enjoyed and it is worth checking out.

Grandia II is really fun. The first one needs to come to Steam, too.