> ...provides employment to people who can’t otherwise get any <
You might catch a bit of flak for that, but it is a fair point. It’s for that reason I refuse to use self-service checkouts. The big difference, of course, is that there are no laws regulating checkout lines.
Anyway, the market will make the final decision. If folks are willing to pay more for an attendant, then there will be an attendant.
Ditto.
If attendant service is universal it costs about 1 cent per gallon. If it is optional, as previously pointed out, it will cost 10 cents per galllon.