I spend most of my time gaming on my PS3 really, but that's because my favorite game is a PS2 game.... that I play on my PS3... when I have an amazing PC as witnessed in the link in my signature. But I also have a full time job and so I'm getting really tired lately after work and just like lying back in my recliner with the ps3 hooked up to a 30" tv that sits on an end table next to my recliner with my 60" TV playing movies or DVRd TV shows, instead of playing on my computer's dual 24" monitors because quite frankly, all the new games are stuff I've already played before, and aren't nearly as interesting as my favorite PS2 game, that I bought an original model PS3 specifically for because they upscale the graphics and only the older ones actually play PS2 games.
I get bored after about 30 mins of playing most PC games now, but I've been gaming for 25 years so... yeah.
Work harder, save up more money, buy em all. Or just give up on the one you don't actually play. I owned a PS3, XBOX360 and a Wii. I never used the Wii, and the game I put the most time into was Wii sports. I grew tired of the Xbox360s offerings, and the PS3 had better graphics... except I really only play my PS2 and PS1 games on it... except for Dynasty Warriors... I'm one of those guys who buys every Dynasty Warriors game they make, even though you might think they haven't changed in the 15 years they've been making them.