I delete those. Get a vocabulary such that you can insult someone and they think it's a pat on the back.
Words aren t bad people are.My Finnish friends say that "the f bomb" is very popular there. Children use it at the dinner table with at most a disapproving stare from a parent. Its considered nicer than their most nuclear curse...
"Perkele!" (The Devil)
What makes a word "bad" is all in culture and context I suppose.