But who is to say who has or what is a great life? Dr Edward Bach in his studies of people and happiness noted those who were following their true path in life, be it a fisherman, teacher or mother are the happiest and most fulfilled.
Yanno - one mans trash is another mans treasure yadda yadda yadda.
I know what you are getting at though - for one thing I think many, many people's true path IS to help others.