Why everyone is trading for games and cards only?

There is still a lot of people trading for keys you just need to find them

most traders accept keys for games!!

Put Keys in "I have" and in "i want" you just put games or a specific game, i hope i helped

But Why? Are Keys not trustfull anymore or what happend?

Maybe they don't want to wait or aren't authenticated. You're definitely exaggerating the "everyone" though greatly.

Well, I usually buy and sell games for cs:go keys. I don't know about the other traders. xD

Alright, so I search for people who are fine with Keys

Thanks everyone for your reply :)

must be the game you're looking for ... most sources i use
and know of still only accept keys

btw. since the last valve update key prices have risen, not
surprisingly cards as well since selling in the usual way is a pain
(but more worth per card than it used to)

Funny, all I ever see is people asking for CS:GO keys; I could hardly sell games for cards and even less for gems.

Well, i want some games who were heavily discounted or in bundles recently and not worth a key, but there are still Tour of duty Tickets, arent they?

That's very strange. Given the value of keys, traders should be happy to take them over cards and lower value currency anyday...
The only reason would be if the things you are trading for are nowhere near the value of a key (say, most bundle games). But I don't know who'd ever deny a key since it's a safe $2/€2 item that can be cashed out near instantly anywhere.

Haven't personally seen anyone taking cards over keys. Keys are very popular.

I don't play csgo and I also don't have much of an understanding of the csgo key (or other games like tf2) worth. So it's simpler to just go for the games and cards I want rather than keeping a csgo key as currency.

I accept keys, cards, sacks, other games, PP, livestock, fruit baskets, naming rights (up to third-born), and textiles. Still working my way up to 1000 feedback while building a shed in the backyard for all my new goats.

Also, OP, whitelisted. Cows stick together.