You should really look into broadening your tastes in games. When I got a Vita the only retail game I had for 3 months was Unit 13. When Gravity Rush released I was going to pass it up because it "wasn't my kind of game" but then I thought screw it, I spent $250 on this beast why not try something new?
So I ended up buying Gravity Rush and 16 retail games later (plus around 10 PSN games) I can safely say my Vita purchase as been completely justified no matter what happens to it.
I've bought games that 1 year ago I NEVER would have thought about buying like Soul Sacrifice, Metal Gear Solid, Assassin's Creed, Smart as, Rayman Origins, and most importantly Persona! Persona 4 Golden is reason enough to justify owning a Vita and all those pre-mentioned games plus more are just Icing on the very tasty Vita cake of awesome!
PSN: extremeM
PlayStation Vita Japanese Software Sales (Media Create Physical/ Famitsu Digital)