I've been through 3 PSPs since it launched.
#1- Japanese launch PSP. Thought it would be the coolest thing I've ever bought. Played Ridge Racer and Lumines, and it collected dust for 6 months. Sold it.
#2- Some time after GTA: Liberty City Stories came out, I bought a US PSP. I figured the library would be worth it by this point. I was wrong. Collected dust for another six months. Sold it.
#3- Given to me as a gift 2 months ago. Currently collecting dust. I think I'll keep this one, though. If they ever decide to release a Castlevania for it, I won't have to buy yet another one. Other than that.... Yeahhh....