SteveC
Doing the best imitation of myself
I think that's the point: other classes have spells that are limited resources period, whether that is short or long rest related. Some of them affect social or exploration encounters. Fighters don't have those things outside of taking feats.Other than rogues and bards, no other class gets a particular benefit for OOC activities outside of limited resources.
Is that an issue? Not to everyone, that's for sure. To me, it sure is, and I'm actively in favor of giving each class something mechanical to do in each of the game's pillars. And again, that is nowhere near a universal consensus.
What I've seen in my groups is that no one ends up playing a fighter, and again that is definitely not the case globally, as Wizard's surveys say it's a popular class. The best answer I can give for that is that it's a great starter class when you're new to the game... and there are a lot of new people just starting play.