It's because whatever you do in your house is affecting everyone around it. So you making little extra money is taking value away from everyone else in your nei

It's because whatever you do in your house is affecting everyone around it. So you making little extra money is taking value away from everyone else in your neighborhood. The fact that you don't know anymore everyone in your block is hugely affecting safety and let alone extremes like your airbnb guests getting loud, throwing trash around, making parties etc. In my area we have a legal agreement between all apartment owners that things like this are not accepted.