I think we brothers realised his loss more and more as we grew older. We actually grew closer after his death.
I'm trying to get a thicker skin. I like to be aware of people's perceptions of me, but when you put it as a priority, as a means to judging your worth, that's when it can be dangerous.
But most importantly, we can all be donors. It does not matter how old you are, your race, where you live; all of us can give the gift of life.