I've had my PC for 3 years and it hasn't crashed once. If your computer crashes that much... pebkac.
I had a boss who was a computer geek from hell and yet he would crash his computer almost monthly. so one day he is whining to me about how much Windows sucks and how he has to reformat or recover his comp all the time and how he wants to switch to a Mac instead.
After his rant was over Ijust looked at him and simply said, "maybe you fuck with your filing system too much and should learn to leave it alone once in a while because I have a comp running ME and it has been on for 6 months with no issues while downloading pirated music and programs."
He bought a Mac the next week and crashed it in a month and a half...point proven, some people need to leave well enough alone sometimes.