It may be insulting to you, it might be true that you or the people you know would never trash a property and still at the same time some people in your demographic might behave like that. Since it's zero cost to exclude the whole group, that's what the owner is going to do.

People with money are not perfect or of inherently better character, the banker that does coke on Friday is just less likely to use the floorboards as kindling compared to a junkie with more congruent background.