If you need convincing let me tell you that I recently bought a Vita. Here are 8 reasons that people should immediately get the Vita for:
1.Virtue's Last Reward (It's also on the 3DS but this one has voice and hd graphics. It's an unforgettable game)
2.Uncharted Golden Abyss (Extremely good for a portable Uncharted. The pacing is amazing)
3.Gravity Rush (A very original game, anime style, where you control gravity. I have loved this new IP)
4.Killzone Mercenary (This is the best First Person Shooter ever released on a handheld. Arguably better in some regards to its PS3 predecessors. Awesome multiplayer)
5.Little Big Planet (This is the best little big planet out there, regardless of the reviews and you have access to all the created levels of Little Big Planet 2)
6. Persona 4 Golden (One of the best RPGS of all time with a lot of new exclusive content
7. Most of the PSP library can be downloaded
8. The games to come which include: Tearaway (from LBP creators), Phantasy Star Online 2, Phantasy Star Nova, God Eater 2, Soul Sacrifice Delta, and Gravity Rush 2.
This are enough reasons to get a PS Vita. Plus, some multiplatform games that are the same on all versions cost $40 for the Vita version as opposed to $60 in the case of PS3/X360/WIIU. Example: Rayman Legends. If you get Playstation Plus. You immediately get Uncharted and Gravity Rush as well. The Vita is well worth it at this point and especially after the price drop.