Those too stupid to do the right thing or take responsibility = children. That's fine --make me responsible for people who are chronologically adults but emotionally and intellectually children -- but then I make the decisions for them just like parent do for children. That means that they don't vote and they don't get to choose when to replicate themselves. That is my decision to make as the adult who is taking responsibility for things -- with the responsibility comes the freedom.
Can't have it both ways. Can't argue that you are incapable or unwilling to take responsibility for yourself and that you deserve all of the privileges of taking responsibility for yourself simultaneously.
Unless you want an unstable system in which the children steer the plane straight into the ground.