There have been several studies recently indicating that rich people are more corrupt than average folks. This take by Andrew Sullivan has some good links as to why money might insulate us from other people, make us less apt to understand how it is for those without money, and more into the addiction of getting more and more of it. We have all seen the corporate heads who did something unethical to get more money when they already had a lot. Jesus warned about it in his talks. Anyway it's a good article.