Turn off your phone if you don't want to receive robo-dialed calls and unsolicited texts 300 times a day.

Fence off your yard if you don't want people coming by and dumping a mountain of garbage on it every day.

You can certainly choose to live in a society that thinks these are acceptable solutions. I think it's bullshit, and we'd all be better off if anyone doing these things would be breaking rocks with their teeth in a re-education camp, until they learn how to be a decent human being.

Ah yes, and unplug the mail server to stop all spam. Great idea!