I have broken derailleurs, and I’ve also had them bumped out of adjustment and damaged at bike racks. Switching is probably a bit of an unecessary faff. But if

I have broken derailleurs, and I’ve also had them bumped out of adjustment and damaged at bike racks. Switching is probably a bit of an unecessary faff. But if you want a drivetrain that can be ignored or neglected and never complain, an internal gear is really great. For a commuter bike it also allows you to fully cover the chain and chainring if you want.