I
have visited back-to-lander hippies, and stayed with them at times. There are certainly aspects of their lifestyle I admire, but I think you're romanticizing it more than is accurate. It's particularly off-base to think that hippie-ism prevents opiate addiction: drug use is rampant in that community, and while you might see a decrease in opiates due to their social stigma in that community, there's still an opiate problem, and there are full-on epidemics of issues with other drugs. The same is true for a few related alternate-lifestyle communities I've interacted with.
The responders pointing out that the back-to-the-landers often don't have adequate medical care aren't entirely off-base. Pharma is fundamentally broken in the US, and this places strict restrictions on the freedom of many people here: if you need medical help on a regular basis, you have no option except to work--the "rat race" as it were. Work itself won't make you happy, but I think for most people, dying of illness that went untreated because they can't afford care isn't happiness either.
But some of us are healthy, and I do have choices. In the past ten years, I've worked a rat race job, then actively chosen poverty and didn't have health insurance, and finally started a company that's successful enough that I have health insurance again. I don't think it's accurate to say that individuals don't have choices. And that goes for everyone. Certainly some have more choices than others, but we all have at least a small degree of agency in our lives. So I don't think it's entirely fair to think that everyone is unhappy because they chose a life outside norms (i.e. without health insurance).
The question remains though, whether choosing to step outside of the norms actually makes us happy. I think the answer to that is somewhat individual: we all have different things that make us happy. But for anyone, there's a certain amount of hubris in assuming that you know better than the norms. Often, norms became norms because they work for a lot of people. I think, for example, we have lots of evidence at this point that percentage-wise money does buy happiness--up to a certain amount, and depending on how you spend it[1]. But those are percentages, not absolutes--there are miserable and happy people at both extremes of wealth and everywhere in between.
I don't know where this leads us. I suspect the reality is more complicated than any of us understand.
[1] https://scholar.harvard.edu/files/danielgilbert/files/if-mon...