I have a PS3 and love it. Of course, it is only my secondary console- I use my PC as my main gaming platform, as is has always and will always be the best way to play games. but lets not get into that. I do love it for movies and for playing console exclusive games (3D dot game heroes, Skate 3, FFXIII).
And lord knows it fills that slot better than a 360. Why?
1)A decent few "360 exclusives" are actually just not for PS3 (mass effect, L4D).
2)Why pay for online? Even if it was my main system, I wouldn't want to do it, none the less pay for something I'd only use occasionally.
3)The PS3's exclusives are just better. 3D dot game heroes, GoWIII, MGSIV, LittleBigPlanet. Sure, the 360 has Alan wake, Fable 2 (not 1/3, they are on PC) and the halo series, but really, I don't think paying for online is worth those games.
4) Hilariously bad HDD support/ USB drive support. 'nuff said.
5) 360 is starting to show it's age. Soon enough the 360 won't be able to keep up with the PC/PS3 in terms of processing power and graphics.