And in the places where it's not fineable it still doesn't happen. It would be super weird to see a shirtless person on a street in a Central or Northern European city, you'd either think they have some screws loose or they are pretty drunk.
Parks, beaches, saunas it would of course be normal.
Not sure about India but in a lot of European countries walking shirtless on the street might be a fineable offence. A larger discussion on the subject can be found on this recent /r/europe thread. [1]
[1] https://old.reddit.com/r/europe/comments/qixnsa/filling_up_a...