It's one of those funny things, actually... As Maverick said, money is great at removing overall negative influences from your life, allowing you to return to normal... but it doesn't really make you happy above your own "happiness" level. So while money can buy love, in a sense, the selling of love only really works when someone needs to remove those negatives - otherwise it doesn't really make a difference in either person's life.
No way! Although having enough money to pay your bills and live a comfortable life can be a huge sigh of relief. The less worries you have the better imo.
If you are a miserable prick, having more money will only make you a bigger miserable prick.
I happen to catch an episode of Kimora Lee Simmons Life in the Fast Lane, and was disgusted by her behavior. I don't care how much money you have there is no excuse to behave like an ass. She has such a high opinion of herself! It's embarrassing really.