Buy PS3 after good Xbox 360 memories?

I bought Xbox 360 almost 2 months ago and have been enjoined it very much... All my friends got PS3 and said its way better than 360, but i just bought 360... Now i have 6 games for Xbox and if i would buy PS3, they would be useless... But if i would buy PS3, i could have some games from my friends... I really dont know what to do!!! :(