Freakonomical

It's the jealousy ...

• They are stuck in 9-5 while you are not
• They have 10,20 year loans which you don't
• They have to compromise their partner's lifestyle which you don't
• They want what you have but they can't have it even though they followed all the "rules" in life ---- married, job, kids,mortgage

and it makes them mad, they can't comprehend it

basically entitlement.