What is the PS3 life expectancy when it's used for Blu-Ray

[kvh22000]

I Own a ps3 and live with 4 people who play it. (Dorm) I own 20 games and 20 blu rays and watch all standard dvds on it. I would say it has been used 5 hours a day minimum since I purchased it november 2006. No problmes what so ever...knock on wood.