As a PS1 and PS2 owner who had many games there were plenty of reasons for me to get a PSP it had a bunch of exclusive games that were apart of a big franchise. For example.
GTA Liberty City Stories, GTA Vice City Stories, Crisis Core, Final Fantasy Type 0, Daxter, Ratchet & Clank Size Matters, God of War Chains of Olympus, God of War Ghost of Sparta, MGS Portable Ops, MGS Peace Walker, Gran Turismo, Kingdom Hearts Birth By Sleep
That's a great crop of games. Most of those are canon with the console games.
What's the Vita got?
Uncharted Golden Abyss, AC Liberation, COD Declassified, Killzone Mercenary, Resistance.
Uncharted was great where's another one? They butchered COD when it could have been the biggest one? Nobody even gives a shit about Resistance anymore.
Where's it's GTA exclusive? Final Fantasy had 2 proper games, War of the Lions and 2 Dissidia games, Vita has one game from 2001 which will be available on PS3 anyway. No God of War? Is that franchise almost dead now? MGS? Hell that the 2 Acid games aswell. 3DS had Kingdom Hearts Dream Drop DistanceVita? Not even a port of it.
Where is everything? No Vita exclusive Sly Cooper game? Infamous? Bioshock? Resident Evil? Far Cry? Naruto? Star Wars?
Do we just get ports, indie games and obscure cheap anime games?