I believe the more money you have the happier you get. Money won't replace the feelings of being in love or having a loved one but you definately will feel happier having a big house, big car, no money problems than having no house/car/money.
Not having a decent and increasing bank balance gets me depressed, most of my friends have little or no money. This makes them constantly down and depressed, when one of my friends wins or recieves a decent amount of money they feel more secure and the depression decreases.
So imo money will and does make you a happier person.
Hybrids