So, my husband is a gamer, a game programmer, basically he lives games of every kind. I am more your stupid casual gamer who will get interested and pick up something from time to time (Lego Star Wars anyone???) So we've got both ends of the spectrum here. We've got:
1) Computer for gaming
2) Xbox
3) Wii
4) PS3
Out of all of those, the one we use 80% of the time is the Xbox. We don't even use the PS3 to watch shows because a lot of the time we'll download some obscure new anime and stream it from the computer. We also like to do Netflix on demand, and we do that from the Xbox as well. The PS3 is CRAP at streaming. Crap crap crap.
You know what we actually use the PS3 for? Here's what we use it for:
Sometimes, every once in a while, we get a scratched disc from Netflix. The Xbox will just stop playing. And SOMETIMES, if we take that scratched disc and put it into the PS3, it will continue to play, just skipping forward a smidge over the scratched bit.
Oh, right, we also use the PS3 when we're too lazy to take out the disc it has in it to watch another, so we just plug the new disc into the PS3.
Have I convinced you?