I bought the PS3 cause I owned PS1 and PS2. It seemed like the logical next gen console for me. But actually what pushed me to get the PS3 was Final Fantasy Versus XIII being announced as an exclusive... well we all know how that ended.
I think one game ever interested me for the 360, Ace Combat 6, which I played later on and was inferior to the ps2 games. Still I would like to have my collection complete, oh well. PS is much better though, you are right.My reasoning was simple in it's own way. I simply prefer Playstation over Xbox. Nothing on the Xbox has ever interested me and to be honest, the controller played a part in my dislike for the console. I am more impressed with Playstation overall.