He's a mooch!  So now when your parent's say enough is enough...he's going to find a woman to mooch off of.  It wouldn't be okay no matter who hes taking advantage of.  We all got one in the family...well at least I do too.  but they aren't 30. 

Hi, I feel your frustration..! I have two people in my family that resemble your situation. My 24 year old step son and my 40 year old brother. My brother has become the, basement uncle. He lives in the basement of my younger brother. My step son of 20 years lost his brother in an auto accident 3.5 years ago and is lost. We just had a talk, last weekend about what he wants out of life? Matthew past away 3.5 years ago, time has to move on.

What my brother and my step son have in common is the fact that they are lost. Sometime, so many things going on upstairs, we don't know which way to turn, what to do, or who to turn to. We hope that one day a light turns on before we get to old. I know that light turned on for me. I was that guy. I was that mooch. I was always waiting for success to drop from the sky.

As a sibling it has to be hard. I would forget about it, you are doing your own, be proud of that and be the example for your brother, because the older he gets the more ashamed he will become. No one is that powerful that they can sleep at night, show up for family function knowing for a fact everyone knows.

Good luck and may the universe be prosperous to you and your entire family