We keep each other honest in this respect. Watch The Trend. Wealth itself is not wrong. Its just dangerous. Likewise, liking nice things is not sinful, but it can quickly lead to sin.
Nice things are seductive.
They tend to draw us away from God in tiny baby steps. Getting more only to want still more. The trend of most families today is toward accumulating. In fact, to most the idea of having less at the end of a year than at the beginning seems un-American at best and insane at worst. I don't mean to suggest we are constantly doing this.