Ps2/ps3/xbox360 Delema?

ok what i dont get abut the current ps2 being outdated thing is that it isnt fair to people that have a ps2 and dont have very much money and already have a lot of games for ps2 and want more but now you really cant find any more good new ps2 games and the ps3 x box and wii cost alot of money WHYY!!! it isnt fair think about it