For what it's worth, TH, I think it's the right decision. You've certainly done your part to help out the league. I made the same decision 2 seasons ago. I still do an occasional game or two to help out when an assignor is in a pinch, but it was time to give it up.
The only downside to your decision is that you may be getting an "I told you so" from Rut soon.
Chuck