12 year PC gamer here, and I voted PS3 because( I own one) it is the most versatile system. It plays Blu-Rays, it can stream ALL my content from my computer via PS3MediaServer, full 1080p PCM audio included. It has a card reader, a hard drive I can swap without voiding my warranty...it's an all in one. The other systems are not. I only own a few games on it, I bought it mostly for the video streaming. If a title, like Bulletstorm for example, is on PS3 and PC, I get PC, EVERY time. But for those few games that are fun, and I must have them, like LittleBigPlanet, I buy them.
Generation before that: Xbox. Because it let you rip CDs to the HDD to playback during gameplay.
Generation before that: N64 BABY! YEA!