I'd never understood the appeal of wireless headphones, and I guess I kind of do now that I have AirPods. Mine fit fine and stay in while running, but that's the only use I've found for them. Anywhere else and I'd much rather use my 15 year old Sennheiser earbuds because I have so many problems with the AirPods:

* like pretty much all Apple earbuds, they don't seal to my ear so they're totally useless in loud places like airplanes (my #1 use case for headphones)

* audio frequently drops out, especially when outside (and there's nothing for the bluetooth signal to reflect off of)

* terrible mic quality for phone calls

* unreliable pairing to my Surface Pro

* one more thing for me to forget to charge

Some of this is anecdata and maybe I just have lemon AirPods, but my experience has been very far from "there's no going back and there's no comparison". I'd sell them without reservation if I didn't feel weird in general about selling earbuds.