I don't don't think it should be just for rich people, but when i was a kid it was rare to travel far abroad, and with it came a sort of feeling of responsibility to represent your place of origin well through good behavior, and be respectful to the place you are visiting, even as a kid i understood that without being told.

That aspect is definitely gone in the era of mass tourism. Every place can be reached quickly and for cheap, it sort of devalues the experience of travelling.