What I am interested to know is if meditation correlates with increased ability to cope with life problems. Because many people treat it like a refuge from the hardships of life, not a super boost in mental powers.
I have hardcore practiced meditation for 20 years and some of my colleagues who were doing the same were in a pretty bad state - unmarried, with a low level job and not owning their house. They weren't on average happier than normal people.
I attribute their failure to the philosophy of detachment and switching from normal life goals to 'spiritual goals'. It was all a bust. They were exploited by the school under which we practiced. I had the good sense to keep my life separate from the practice so I wasn't affected as much.
Maybe it's a problem of the school I followed, but the same idea of detachment is part of all schools. In the end what matters is survival, and in today society, it means building your career and family, not just sitting still.
To the down-voters: can you contradict me after 7000+ hours of meditation, where you actually achieve the experiences mentioned in the ancient texts? Meditation worked very well for me, it was the general direction that was bad. We're supposed to maximise our rewards, including having children, not replacing this with an artificial abstract goal. Our rewards are selected and chiseled by evolution, they are what made us survive and thrive.