I think it's more like having an automatic in car - vs. a stick... but not air conditioning vs. not.
My Ultegra mech is like butter and needs no adjustment. I'll agree, the auto trim on front derailleur would be nice. Oh, and if I ever get to the point where shifting a mechanical derailleur is "hard"... it's time to sell the bikes ;-)
Full discloser: I love disc brakes, carbon and don't think "steel is real"