[diskcat]

>This is about your guests,

who consented to the conditions of your house when entering. If he is not sure he ought to hire a civil engineer to inspect and verify the safety status of the house or ask the host to do it.

>your children,

who is your ward and is subjected to the decisions of its parent with regards to all of life choices

>the person that buys your house next,

ditto the guest situation except for buying

>the person that lives next door

this is the only legitimate case for regulation, to protect the public and/or third party.

>so they threw their (still very hot) excess soup from their pot out the window and it got all over me.

This is not a problem of housing but of manners. You can get rid of hot soup without infringing of other people's ability to walk around the public area and not be wet.