I am having these points in mind for a long time. I tried to clarify them for myself for no avail. So I am posting the thoughts as they are. If any reader can add an idea/explanation/thought it would be greatly valued.
I suspect that humans are not built for technically optimizing and managing the lives.
I used to ask people why not try to use Gottman method to predict relationship future (he was able to predict marital satisfaction and happiness with 90% accuracy)
Nobody was willing to think about the idea. But people surely discuss with freinds whether to get married, they do other things to decide and think.
Somehow, an optimal method is not being used. Is technical the term? Or because it does not arises to mind and action in a natural way? (quite plausible).
There may be more to that. And the whole idea of technical things is unclear to me.
That is why certain optimizations of life is not being used. You can get happier by doing meditation, but it involves donig something out of the ordinary, mechanical, and unnatural.
No convincing reason either. You got only the technically csounding claim that "practicing meditation is improving happiness significantly". This is a dry and unnatural reason.
Tell a male skeptic that there are pretty girls in the course and he will run on all four. *this* is a natural motivator.