nope. i bought mine only with the intention of playing ultimate marvel vs capcom 3 and later 1st and 3rd party games. for the first few days, i was seriously excited. it looked sexy, graphics were nice, controls/gamepad were surprisingly good and miles ahead of the 3DS, etc. then sonys E3 conference came. boy, that totally killed any interest i had in the upcoming year. felt crapped on by sony. no games (rumored or upcoming) excited me. i didnt want to wait until 2013 to use my vita again. after thinking about it for a while, i returned it a few weeks later (30 day return policy) back to amazon.
to be fair, i havent even touched my 3DS since i beat ocarina of time 3D last year, but there are far more DS (yes DS) games that interest me than vita/psp games, and i had played them all on my 3DS last year. honestly, i had no place for a vita. it was too big to put in my pocket/carry around, couldnt play wherever i was going (either i was driving, or i was with friends, etc), and at home, i had all my consoles and PC to play on so why restrict yourself to a handheld? not to mention, most of the games on the vita dont even interest me, and that is a personal preference.
i wouldnt buy one until you can find it for less than $200 (i found mine through amazon warehouse deals) and if you see *at least* a few games that you would definitely buy. the proprietary memory card was also another annoyance, but luckily i didnt have to buy one because i only had ultimate marvel vs capcom 3 (the jill and shuma-gorath dlc both save directly to the game cartridge, so you dont need a memory stick!).
tldr - no, save your money either until a new revision comes out or wait until you can get one for under $200 and ONLY if you like a few games to go with it too (dont get a vita just because of one game).