Personally I believe happiness is subjective... It's not an objective idea, so people can be happy with or without money.
Even though this world has put so much value on money, alot can be done without it. Food can be gotten from farms, if you inherited a piece of land you can build your home from basic material, and remain happy.
Just my thoughts though
@winarobert I agree with you - money is not always needed. The question was raised about the the truly impoverished with no assets like that piece of land you described-what then?