Because some people deserve only contempt.

There’s a pretty good chance that they’re idiots, useless, annoying, dull or all four. So there isn’t much going for them.

You can hate them openly, angrily, but it isn’t very effective.

Trying to get under their skin works.

And trying to distance yourself from them so their stupidity/uselessness/annoyance/dullness doesn’t bother you will also help.

Having no fucks to give will make it a lot easier to ignore people.

After all, if people are going to be annoying, nothing will stop them. The safest thing for your health is to just let them be annoying and slowly back out the door.