Schultzy, LOL, dam man I thought I used to shot a lot!

I think you just answered your own question in spades, nothing lasts forever!
It appears you have to add another bow to the trophy room wall, preferably a place of real honor, then again if you are happy with the way it still shoots and are willing to take the chance that the fatigue won't snap a limb one day and that it will probably continue to loose poundage, keep on getting up.
However I seriously think you have squeezed your moneys worth out of that bow, retire it dude!

Think how much fun you will have deciding on a new bow, one that will hopefully get as much attention as "old faithful" has been to you. I know how you feel about the bow, believe me!
I had a Wing/Red Wing that I dearly loved until some SOB stole it, it was a long time ago but it still just sticks in my gut!!

Think about it, Changeling.