I rode a bike with electronic shifting once. The shifting was incredibly smooth and it seemed like a great system.
That said, I don't see myself ever buying it. I'm a bit of a purist, but I prefer mechanics to electronics any day of the week. Mechanical breaks can generally be cobbled together trailside if needed. Seems like an electronic failure would likely have you walking back to the car.
See, that's the thing about the AXS (and maybe Di2)... the servo was
built to survive hits that cripple cable mechs. There's a **** ton of videos on the web of people smashing the bodies with hammers and the RD just "moves over, absorbs the hit, and recalibrates".
Edit: I get it, $375 is a tough pill to swallow for a part of the bike that hangs down and begs to be abused, but at $125 a pop for a non-AXS GX RD, you break 2 and that you've broken even on price. In COVID times, there's no guarantee you can buy a new RD on a whim.
I'll pay a premium for the privilege of it surviving a hit or two, plus the daily, --every shift is perfect-- operation.