I went to my grandparents and didnt shut computer down three days. When I came home, I shut it. I am not fill comfort now and I avoid turning it on. I think that something might be broken, because it worked 72 hours. How long do you keep your computer running? Have you ever had any troubles with it regarding above wrote?
If you have high-class hardware and if current in your apartment is ok, you shouldnt worry. Sometimes my computer running for whole week when I have things to download from the internet or a lot work. For computer is better to run than shut off/on few times per day.