electronic shifting is lacking in a necessity for any particular skill or talent, IMO. i think that for the most part, i find learning shifting technique and then putting it to a good use is satisfying. like Harold Hill said, "i consider the hours i spend with a cue (substitute friction shifter) in my hand are golden. helps you cultivate horse-sense a cool head and a keen eye. did you ever go try and give yourself an iron-clad leave from a three rail billiard shot? ... i say, any boob can go and shove a ball in a pocket (push a button on the handlebar)".
i don't discount the advantages in a professional race though, especially a criterium, for practical purposes, it just removes it from the level of a skill to a commodity.
and i'm sure i would feel the same way about pre-drailleur bikes too. it's just that i was born AFTER the Hoover administration.