I would love to be wealthy and own a nice house, but there comes a point where all you are doing with the money is trying to impress people and I find that level of conspicuous consumption to be indicative of a persons inner insecurities and rather pathetic.
Come to think of it....I am fairly wealthy and I do own a pretty nice house. It wouldn't impress a millionaire but then again I don't feel the need to impress any millionaires. Happiness isn't having everything you want, it is wanting everything you have.