Ok. But how much time have you spent considering serving temperature and how much time have you spent considering all of the other things? I'm not saying they all deserve the same attention, but surely serving temperature is vastly under-considered in the grand scheme of things.
Or maybe it isn't. Whatever.
i kind of agree with you, less about homebrew scale and more about craft beer bars. im paying for the value-addition of service/packaging (a glass/mug), so i would expect more care than if you asked a random person on the street to do it. but what i have encountered in my extensive total, but limited recent history of ordering a beer is that bartenders are rarely trained well/simply don't care/do some single serving temp for convenience(targeting BMC drinkers) and I sort of expect too cold of a pour.
I can't think of a worse beer experience at a bar than both way overcarbonated and way too cold. It was something i would encounter a LOT in Korea.
So in terms of ordering a beer at the bar, it is fairly under-considered in that I feel bartenders generally do not bother/understand (could be either) serving temp of beers - assuming that "hey it comes out of the keg and its cold" is good enough.
on the homebrew level, IMHO it is totally up to however you want it. lol i dont care how you drink your beer.