I talked to a couple guys I know that have kids between 12-17 and they said the reson they will buy one isnt just for the games the kids play but for the Blu-Ray HD movies it will play.
Currently a Blu-Ray HD player is expensive, so when a PS3 comes with one built in its a big plus.
Personally I dont even have a PS any more, I gave my PS1 away when the PS2 came out and "loaned" my PS2 to one of my buddies kids..I never expect to get it back..
I have a X-Box and a X-Box 360, I very rarely use them at all, but I may use the 360 and Windows Media Center together more since they talk to each other nicely.
As far as a price drop, well ya know thats gonna happin, and there will likely be bugs in the first ones to be worked out..I never buy brand new tech..basicly you are just beta testing guinnie pigs .