What someone wears is a part of their self-expression. In this post, you use the phrases "respect for one's appearance" and "care about [one's] appearance" to suggest that people have a responsibility to follow certain norms in how they dress in order to make "'civilization' aesthetically appealing," in your words. Aesthetic is a subjective, and I think it's funny that you are so eager to project your aesthetic onto others. I for one actively choose to wear pajamas, go barefoot, keep my hair disheveled in public because that is my aesthetic and I think it looks good.
I will also clean up my local park, reduce my ecological footprint as much as possible, insert socially responsible behavior here...but you should consider widening your view of what is and isn't ok to wear in public.