[MarkusQ]

See, the "your" in there is what we call a possessive pronoun. It indicates that something (in this case, my porch) is owned by someone (in this case, me). That makes what you are proposing doing a property rights issue, not cultural criticism.

Shit on your own porch all you want.

[asdff]

Fine, I will shit on the public sidewalk easement.

[MarkusQ]

Again, that's public (shared), not yours.

Not sure how (or why) you've gone from "we shouldn't be judging other people's taste" to "I get to defecate wherever I want."

[asdff]

It is a subject of taste is it not?