Should I sell my ps3?

Ive had a ps3 for about 2 years now and bought a couple of good games. but now they keep coming out with 1st person shooters. I play games like ratchet and clank and mortal kombat. But I also have a wii and I know im missing out on alot. Should I sell the ps3 and buy wii games or can someone convince me to keep a ps3?