Money and fame are trashy and don't guarantee happiness, but we all refuse really to know it.
The most natural way you would attempt to cope with something inside you that is affecting your moods and your energy levels is to intervene with chemicals to help and because medical science hasn't come up with pharmaceuticals that do particularly well you tend to reach for the chemicals that are outside the Pharma counter, i.e. narcotics and alcohol because they can guarantee your mood more or less.
Seriousness is no more a guarantee of truth, insight, authenticity or probity, than humour is a guarantee of superficiality and stupidity.