Its beautifully written. As someone who has always tried to be responsible and dependable, your voice rings a bell to me.

As for the labelling of "loser" to your brother, its a bit unclear on whether your brother was self-sufficient or not. If he wasn't, the learnings are valid, but whether validations of his behavior is a moot point.

A bit of caution on the ignore the labels part: it may appeal to the hedonistic tendencies of some people who may just assume that the whole part of this post was to let people what they want and not care about others. Its great to be THAT person as long as its not in your life.