There are norms of decency, forgotten in favor of "comfort and self-expression". And these norms extended to the daily dressing. Some 20-25 years ago it was just not decent to wear a sports suit for events not related to sports, it was not decent to appear in shorts, slats, with a naked torso in public places other than the beach. Now they go to the cinema, the cafe, the club, on a date - they see so comfortable. Your appearance speaks about your self-esteem or the exact lack of it.
– is
Well, before it was "unclear" (truly, I strongly doubt that shorts 20 years ago were something "unclear"), and now it is not. All these rules of conduct in public places should be based only on the idea of a comfortable environment. If it smells of you, it’s disgraceful. If you refer to the asphalt and sprinkled someone, and somebody then comes into it - it is inappropriate. Music shimmering from the speaker of the phone or from the headphones, from which others have a headache - it is inappropriate. The appearance of a person is his personal affair. Except for excessive nakedness, because sex is considered to be intimate (and not because men’s legs, you see, are ugly:))) But there are no massive naked torsoes I do not see in our Peter even in the hottest heat, except that on the street sometimes, but neither in the cafe, nor in the movie, nor even in the subway no naked men walk :)