This post is like swatting a hornets nest with a broom!
From where I sit it looks like those that upgrade annually have the funds available to do so and enjoy doing it.
I am on my 2nd new bow trying to find the perfect replacement for my 1996 bow (which i still have and shoot).
The 1996 bow set the bar so high it took two purchases to find one that feels better to me.
Once I get this bow performing to my satisfaction I plan on keeping it a while as I could better use the green elsewhere (more deer hunts, better lease).
BUT if I cannot get it tuned to my liking it will be replaced with another $650+ bow. I've got my eye on two of them, so it had better perform!