I don't mind having my bag gate-checked, if need be. First off, you don't have to pay a ridiculous fee. Also, if your bag is gate-checked, nine times out of 10 it is waiting at the gate, so you don't have to deal with the baggage carousel. What is the downside? You don't really need your suitcase with you on the plane; if there is something in your suitcase you can't live without, you can remove it.
Since we are talking customer service and retail, here is another pet peeve of mine. Clerks who give service to the person over the phone instead of the person in front of them. When I worked retail, we were taught you take care of the person in front of you, because that was a for sure sale. The person on the phone may never come into the store.
This pisses me off, too. It happened to me recently: I stood at a register for 10 minutes while the clerk talked to a customer on the phone, only barely acknowledging me. In the end, I walked out in frustration and she lost out on a pretty nice commission (it was a high-end men's store here in Manhattan).