I think I have five colleagues at work who have “adult braces” right now, and my dentist has pestered me to think about it. (I had braces as a kid, but they fixed one problem- the overbite, and nothing else).
Put me in the camp of braces not falling into the “survival” category of parenting unless it’s a severe maxilofacial issue that impacts eating and chewing. There are lots of people in their 20’s, 30’s and 40’s who get braces because their families couldn’t afford them growing up.