As mentioned up-thread, how you dress and present yourself in public is very much associated with age and circumstances.
In my 1st decade of life, I cared not a whit how I looked in public. I’d wear whatever I could get out the door with, without incurring my parents’ wrath.
In my 2nd decade of life, I was hyper-aware of how I dressed and presented myself in public, especially to those of the opposite sex. Hormones dominated.
In my 3rd decade of life, I was hypo-aware of how I presented myself in public. It was a decade of school and hanging out with sloppy classmates.
In my 4th decade of life, I was again hyper-aware of how I presented myself in public, though not as much as my 2nd decade. This was a decade of building a profession and attracting a life-mate (I attracted the wrong one, but that’s not important in this discussion).
Every decade since my fourth has been a downward trajectory insofar as being aware or concerned about how I presented myself in public and adhering to trends in fashion. Looking not bad was good enough.
Now, in my 7th decade of life, I’ve come full circle and once again care not a whit about fashion or how I appear to others (it’s good to be a kid again). Mind you, I don’t wish to offend the aesthetic sensibilities of others by dressing full-bore Walmart Shopper. I just want to wear the most comfortable clothes I can that don’t draw attention one way or the other. I’m not anti- or asocial—I enjoy pleasant chats with those I meet in the wild. But, I’m happy to simply blend into the background, like a chameleon, or Mimic Octopus.
High fashion is a young person’s game (or perhaps, not an old person’s game). I do lament younger people not dressing as generations from long ago used to dress (before my time) in public. Seeing photos of folks dressed to the nines just walking down the street, flying on planes, going to the market, and wot-not made for an appealing landscape. And, I do believe what you wear has an effect on how you behave, at least to a degree. Dress like a slob, feel like a slob, act like a slob.