I think I know what you're talking about when you say "cool" to be rude and disrespectful. I think it's an adolescent mindset that never matures.

Also its some sort of show of "importance". Typical Narcissistic personality disorder that's over taken their every waking thought, behavior and moments.

Yeah, it makes them feel good.

Because you can see that that is of no value, and that the value is in compassion-- I think You're the more important person

Dont' let them get to you. They're showing their own problems.