If somebody is being a leech in the system that contributes NOTHING to it, then we cut off the leeches. Be productive and contributory in some way.
Hell, I respect Prostitutes more than the bum who sits on their couch playing video games all day and not contribute anything to the greater whole of society. At least the Prostitute works for a living satisfying their customers as much as they can, and as often as they can. The bum who sits there playing video games only satisfies themselves.
In the society you propose, you would have dead weight that everybody else would have to carry. Sorry I don't want society to carry dead weight. EVERYBODY that can, WILL contribute in whatever way they can. Even if you're partially disabled, there will be a job that they will be suited to work in. EVERYBODY will contribute to the system, and we'll all be greater for it because there will be more work going in, more output coming out.