Are game systems bad for watching movies?

[vonzar]

I have been using my ps3 as a blu ray player since I got it in december of 2006. It is actually my main use for it. But I just had comcast over to my house to fix my internet connection, and I began talking to the guys after they were done about blu-ray (they said they were fans too). They said that they were looking into getting blu ray players themselves, but did not want to get the ps3, as game systems are not designed to watch movies as well as actual players. They said something about the lasers in the game systems having shorter life spans when used watching movies. I was just wondering if this is true, as I love my ps3 for watching movies, especially now that dts-hd master audio has been added and I have always heard that it is one of the best if not the best blu ray players. Do I need to be concerned about the life span of my ps3 if I watch blu rays on it. I hope that they were wrong. Someone please let me know if you have heard of this too. Thank you.