Do you need to be sane in order to be happy ?

I believe that we are all "differently" sane. Some of us are very serious all the time, and those people struggle very hard against a world that seems insane...and some of us have developed the ability to laugh at the insanity...(which itself requires a degree of insanity).

IMO, those who can laugh at themselves and laugh at the insanity are MUCH happier and better balanced people.