There's probably been threads about this but still..
I'm curious to see the top choice for why you purchased your PS3 system.
I would say mine would be brand loyalty - My first console was the NES, then SNES before switching side per se to Sony and their PS1. Good times on all those consoles. Well maybe not so much NES lol. Anyway we kinda just stuck with PlayStation, as I eventually got a PS2 slim. I thoroughly enjoyed playing the PS2 GTA games and eventually bought my PS3 40GB GTA IV bundle for AU$729 in June 2008. Expensive? Yes. But keep in mind when the original PS3 model first launched in Australia it retailed for AU$999.95, a thousand dollars really. Quite the bargain in comparison.^_^
Anyway brand loyalty was the deciding factor why I purchased a PS3 as opposed to any other 7th generation console. Also, blu-ray and the PSN being free sealed the deal for me personally. Of course some people purchase multiple consoles for different reasons.
So why did you buy your PS3?