nootanond
I've done the same, to an extent - but if I ended up homeless at any point I would not have expected society to pay for my continued foolishness.
There's no doubt that welfare in some form is ideal for a modern society, but people should recognize that willingness to work is tied to desire for survival/comfort and willingness to work for most people decreases as the welfare floor increases.
Forcing someone to work for those who do not contribute to society is theft. There is no reason to believe that the average person will commit to pursuits beneficial for the collective if his needs are guaranteed to be met regardless of his willingness or ability to participate.
It may exist in a number of plants all over the world but that doesn't mean that people were harvesting and using it outside of certain isolated cultures until fairly recently, compared to evolutionary timescales.
If anything I'd expect significant genetic variation representing adaptations only present in some groups.