Again it's the little racist trolls with their "oh but can I use it in this situation" "oh what about this situation" basically playing the "I'm not touching you does this bug you" game that just ruins polite company for everybody. I have never had an instance where I wanted to use that word. But put the Forbidden label on it and racist jackasses can't be help but be tempted by it like a giant red button.

Because forbidding it tells those types exactly what bugs their targets the most.