So I was talking with my tech friend the other day about my pc build and it had been brought up that he leaves his PC on everyday. Because we were talking about the graphics card I was buying and how it had it's own cooling system, so I didn't have to worry about turning off my pc. So I asked him, what do you mean? Because I have always turned my pc off whenever I'm not using it, which is usually not very often, only when I have to go to work or bed. He said he keeps it running all the time so as not to ruin any of his components, the only time he ever turns it off is when he has to replace an old part. Is turning off my pc when I'm not using it going to degrade/destroy my parts or should I leave it running all the time?