wiping hard drive (Score 1)

I don't get it. I regularly re-image my hard drive. I don't do this to remove evidence of activity, but because Mirosoft Windows seems to get cluttered with all sort of junk and crap the longer it runs. I even keep a logbook of every program I install and when I do a reimage. Sometimes a system restore works. Other times, I've had to format and then do a system restore. Bottom line is that there is a legitimate reason for doing restore, especially with a operating system like Microsoft. Does this mean I'm automatically guilty of a crime -- because there's no evidence?