I'm not really into console wars, but I own a ps2 and I think its simply gonna be my last console.
There's just too much good games coming out lately.
and on top of that, I'm still playing my old ps1 games, so I cant really get bored. (Chrono Cross, Final Fantasy's, Persona2, Tekken 3 etc.)
and to give you an exemple: remember Final Fantasy VII? how much were sold? how long did it stay in every single game stores?
That could be what will happen with the PS2
Oh and as for PS3, I know there isn't much choice for now, but some goods are coming thats for sure!

Xbox360 = true American console with sports, cars, and guns(and good online services I have to admit)

Wii = fun for everyone console, top notch gameplay

PS3 = we just don't know yet with the poor choices we have, but I guess (with the goods coming) its gonna end up becoming the same kind of console as the;
PS2 = good racing games, good action games, but its the king of Japanese rpgs/adventure/2d fighting games, and I dont remember the other consoles having Strategy RPGs... did I just miss them? so if you like SRPG you dont have much choices but to go for PS2

so we all have our reason to prefer one over the others, I can understand if you don't give a chocolate about JRPGs, SRPGs, 2d fighting games or innovative adventure games (Okami, shadow of the Colossus), you may get a lil' bored buy the PS2 and its upcoming releases...