I use to get one about every ten years (over the first 30 years hunting). It seemed that over that time frame, advances in technology would demand it. Then all of a sudden, I got a bow two years ago, one last year and now I'm looking for another this year.

I use to shoot much less than I do now. The more I shoot, the more I find myself wanting a specific thing in a bow. If my current bow doesn't have it, then I find myself buying it. Sounds like the beginnings of an addiction.