Yes I own a PS Vita since July 2012. Two games have recently justified my purchase: Street Fighter x Tekken and Ragnarok Odyssey. I'm having a lot of fun playing these two online with my friends. Next tuesday, as a Plus subscriber, I'm getting Uncharted, Gravity Rush, Jet Set Radio HD and Final Fantasy Tactics, all for free.
I definitely don't regret one bit, I really like the PS Vita.
Looking forward to Persona 4 Golden, Phantasy Star Online 2 and Soul Sacrifice.