I'm going to kick my brother out of our house
I hope that's a joke, why would you do that to your brother?
I prefer to live alone, he is too much of a weakling.
If your brother is having problems, you should help him resolve them rather than just kicking him out.  As a sibling, being hospitable is part of your responsibility to your brother.  If you kick him out, how is he ever going to get better?
That weakling has been standing in the way of me living the life I want.
Your brother is not responsible for how your life is, you are. As a sibling, you should be taking care of him and creating a wonderful support system. Why don't you help him with his flaws instead of tossing him out?