I bought my first Vita kind of on an impulse. I sold that one because I got bored and months later I bought the Assassin's Creed bundle mainly because I've never had a limited edition console and I've always wanted one. I wish there was some sort of decal though.
I bought one shortly after launch because I played my buddies and it was a great little handheld. I was also one of the first people I know with a PSP. I still play my PSP-1000 on a regular basis. I use my Vita for all the Vita games and my PSP for the PSP, PS1 and Mini games.
If I tried to launch all the PS1 and Mini games I got from PS+ I would probably run out of space on the Vita home screen...
I bought one because I have a 3DS and the games are somewhat lackluster, and the 3D is kind of annoying because of the angle. But I have hope for the 3DS for some exclusives. But I find the Vita to be more entertaining and easier controls with the 2 analog sticks
Every game being available for DD (every console released after the vita should have this there is no excuse
TROPHIES ON A HAND HELD THANK YOU VERY MUCH SONY (Seriously I love being able to see all my games listed on one screen and it showing me how much i have completed of each one. If the 3DS had this kind of system I would of bought it as soon as I could afford it.
I love my PSPs (I've accumulated seven at this point), went Nintendo for the new generation because of Ace Combat and Monster Hunter. Vita lacks backward compatibility with the PSP, and Sony lost the franchises that are system-sellers for me.
I'm waiting for Bandai to release the WonderSwan/SwanCrystal II and blow both the Vita and the 3DS away.