I bought it for:
1 - PS+, I've got it on PS3, so it would be a sin to let all those Vita games go to waste
2 - It's capabilities and regular games on the go. At home I often can't play my PS3 because someone is occupying the big TV, so I end up playing Vita more than all my home consoles combined
I love it :)
Wii U is a GCN 2 - I called it months before the release!
My Vita to-buy list: The Walking Dead, Persona 4 Golden, Need for Speed: Most Wanted, TearAway, Ys: Memories of Celceta, Muramasa: The Demon Blade, History: Legends of War, FIFA 13, Final Fantasy HD X, X-2, Worms Revolution Extreme, The Amazing Spiderman, Batman: Arkham Origins Blackgate - too many no-gaemz :/
My consoles: PS2 Slim, PS3 Slim 320 GB, PSV 32 GB, Wii, DSi.