Man, I would be so bummed if PSP lost to the Vita. The library of games that the PSP had is much more varied, deep, and charming.
It's packed to the brim with great racing games (Motorstorm Arctic Edge, WipEout Pure and Pulse, Burnout Legends, Gran Turismo, Ridge Racer, and so much more), which is one of my favorite things about it.
Big hitters like Crisis Core FF VII, the God of War games, Persona 3 Portable, the Grand Theft Auto games and MGS Peace Walker are not to be messed with.
Not to mention all the underrated stuff like Sid Meier's Pirates, Star Wars Battlefront II/Renegade Squadron/Elite Squadron, Ratchet and Clank Size Matters, LocoRoco, Patapon, Monster Hunter Freedom Unite and Killzone Liberation.
I have played so many PSP games and I still have a lot to play. I still have a part of my list of to-buy games from back in the day, and there's 7 games here. Meanwhile, I just lost interest in using my Vita for anything other than trying out PS1 stuff and Persona 4 Golden.
I know the PSP's missing right analog hurts it quite a bit (especially for FPS/TPS, but even then there's still a good amount of fun shooters on it) , but man I just could not care less for the Vita's library. It has a pretty decent Uncharted game, at least.
