I'm not crazy enough to change the drivetrain two times a week. I get to go on weekend tours 6 times a year if I'm lucky.

The suggestion to build two bikes is a good one, and that's exactly what I'm doing. But the second bike won't be ready for quite some time. I'm still missing some parts and it may be a while before I have the time to restore what's there and the money to buy what is needed. I still need a rear wheel, pedals, brake levers or butterfly bars, and shifters. Plus cables, tape, tires, etc.