I share this obssession ... I'm trying to break myself of it. I used to sharpen (or rather "touch-up") and edge I'd used, usually immediately after use. As therapy for this condition, I've been trying to not do anything to my Buck 110 with a BG-42 blade until a spot on the edge won't grab a little on my thumbnail with very light pressure. It still might shave, but it won't slice to my liking. Then I do whatever I need.
So far I've gone more than a couple of weeks at a time more than once, but it's not like I'm doing a lot of heavy cutting every day. If I had to cut a few cardboard boxes, I'd be tuning the edge a little right away.