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

[Delusional]

I'm not risky my PS3 for it either. My PS2 only ran a couple of DVDs and it's not very often and although my PS2 didn't die, the laser became very wishy-washy and sometimes keep giving me read disc error. Most times skip or pause during movie, but for games, it ends up not even loading unless I try to restart it again.