Why are some people on this site so rude and abusive, and when I call them out on their behaviour they become worse?

I said as much to one person on this site once. He responded with every dirty kind of words and phrase and told me I shouldn't try to make over everybody on SW. I am pretty tolerant until they jump on me and start to abuse me online. You can't argue with a vulgar screen. If they get under your skin, delete and report...repeat.