Various studies indicate that with age people gain more wisdom about life and are somehow happier than younger people. This is especially true if, as we age, we learn how to become more generous, altruistic, and peaceful.
Matthieu Ricard[Some of the people I'd met] were wonderful people as human beings, and some people were more difficult. I could not see a correlation between their particular genius in playing chess and music and mathematics, etc. ... with human qualities. Some were really good, wonderful people, and some were difficult characters, but there was no clear correlation. But when I met some spiritual masters, [I thought that] there had to be a correlation, and it turned out to be true.
Matthieu Ricard