I lean towards the Comfort angle, but I also start tinkering and producing when I am bored, so I could hardly be considered to walk the lazy path. I look for freedom from lower-level concerns so as to begin address higher-level needs. Money provides a layer of abstraction.
http://en.wikipedia.org/wiki/Maslow%27s_hierarchy_of_needs
I am sure someone can link to the study that refuted the "money can't buy happiness" claim.