“You are selfish.”
This is one of the most gut-wrenching insults a person can throw at you. It puts you into a special category of low life who sucks the energy and resources from others to serve your own interests.
Ironically, being called selfish is usually in response to you being unwilling to do something to serve the accuser’s self-interest, and is quickly followed up with, “You should be more selfless.”
But should you?