Here's how I see it -- and I don't like gymbros either. I once worked alongside a Crossfitter who worked out at noon, and once he'd changed out of his dirty, sweaty things, hung them over the supports of his desk to air them out, forcing me to lay down a protective barrier of spray Lysol to avoid choking on the fumes. So going to the gym is definitely not a core part of my identity, especially since I don't want to be
that guy.
But I still do it. I've been out of it for a couple months and am trying to get back. I have to be somewhat systematic about it for two reasons: a) I have to do the proper lifts with the proper form; b) my body parts get tired and need a couple days' recovery before they're ready to go all out again so I have to do at least a two day split. But yeah, other than that it's just a matter of showing up, and finding and settling into a groove. I gamify it a bit: can I set a PR in squats today? Some days I'm just not feeling it, and I go home telling myself, well, at least you put in the work.
I think there have already been a lot of attempts to make workouts "fun", and the problem really is that the approaches that have worked, i.e, produced good fitness results, turn people into enthusiasts. CrossFit is notorious for being "cult-like" but it has inspired plenty of people -- especially women -- to get into fitness in a really hardcore way.