should i buy PSP

Sure, it's the best PSX portable emulator I can think of :P

for a moment I thought I wrote this

Hi i don't think that the battery will keep the psp on that long, but in my opinion i psp is a great investition.

Never.

Yes. If nothing else it's a great portable emulation center.

If you want PSP/PSX/GBC/GBA/NES/SNES libraries in your pocket the answer is yes.

Nope, I bought it and I regret it, a waste of money. I'd rather buy a smartphone to play games.

Absolutely. Smart Phone gaming is still mostly crap compared to the PSP. I use mine everday for PSP games, PS1 games, and others. Also movies, and other things a smart phone can do (provided you have wifi nearby).

The clincher - it has a dpad, andalog stick and buttons.... and is cheap these days.

Good smartphone with gamepad will do better

The battery lasts for 5 hours max but you can also put there music,movies

PSP have some decent games. And you can if you cant charge it during trip you could always buy spare batteries and charge em all before trip.

Better get a PSvita...

PSP has great (j)rpgs. Graphics ofcourse are old now but that doesnt really matter. I never plan on selling mine.

Better buy a Razer Edge gaming tablet XD...no, joke, PSP is an old thing you can play it even on Android, PSP is not bad, but on Android you can play a lot more stuff that just only PSP, you can play PS1, NDS, etc.

I've had mine for a while. It's really good for long trips and there are some good games on it. If you like ARPG games you gotta check out the Brotherhood of the Blade games. The first is really cool but the second is even better. They aren't connected to each other in anyway so it doesn't matter which one you get first.

The first game is more of a fantasy game. There is this huge city which has been guarded for centuries. There is always a champion who must defend the city. Only thing is the city is never in danger so normally the champion sits around and drinking rum for free. Only thing is that shit goes down the day after you become the champion so you can't do that.

The second one is much better in my opinion. The first starts you out with protecting the royal family while in the second you're kinda trying to kill them. It's kinda steampunk in a way where you have magic and swords and guns/cannons. The game has a much better story to it. The old king has been killed by his brother and with his brother in control of the kingdom everything is bad. You must take the true king/prince to do battle with the evil king all while having the support of an entire rebel army. The game is really fun and you should try it out.

I know you can pick these games up for real cheap. They're a bit on the older side but they're still a shit ton of fun. In fact you've gotten me in the mood to play them again so most likely I'll be popping them back in my PSP and giving them a go.

no, psvita is better and can buy most good ps4 games through sony store

i wouldnt.
as for the trip part of its use, i get dizzy after 5 min looking the phone screen while on bus/car etc...so again i wouldnt.

Yes.
Buy it, buy a SD card adapter. Put CFW on it and buy a 32gb card. Then you can rip your UMD games to your SD card and you will not have to care about bringing a crapload of UMDs around.

Also buy a third party battery if you want it to last around your mentioned 8-12 hours.

Get PSP and install custom firmware. Saves battery and money. Done.

definetly not PSP , either PSVita or a nintendo... PSP was my worst purchase ever.

Got a psp-2000 in 2008 and it gave me a lot of fun, for 5 years.

Battery surely won't last that long, sadly.

It's a great handheld, though. With great games. On the other hand, lots of them are Japanese and some people don't like Japanese games (but that applies to any handheld).
Games are mostly dirt cheap nowadays, the console itself shouldn't be that expensive either. You can put CFW on it and rip games to memcard for further battery saving (since the UMD drive won't be used).

For games, maybe search on NeoGAF and read it (the lists are pretty good, if you ask me). It's a recurring theme, especially with people buying Vita without having the PSP and wanting to know what they've missed from the previous generation. I think there should be a big PSP Appreciation Thread anyway. (of course I could drop some titles as well)
And that's not even counting PSX emulation.

Of course, playing on bus is a factor as well. If you are OK with it (some people don't feel well staring down at a small screen during bus rides. Of course there is the factor of the bus shaking etc.), then good. If not... you get a nice system with great games anyway.

Monster hunter

Or if you have a strong android phone, and a friend with a psp, just use ppsspp, buy games, and rip it with your friends psp

I don't know much about the PSP or PSVita but I had looked into the games there are for it and it doesn't seem like they have a large selection at all, unless I'm wrong. There were a rare few games that actually looked good in my opinion. I'd consider a 3DS (or DS even, if you want to save money). Although there's not currently many games out now that look good for it to me, there will be and it's still compatible to play DS games.