http://webcache.googleusercontent.com/search?q=cache:Ph7Enkr...
I came to terms with ideas like this by changing careers to a profession which, at least abstractly, benefits humanity. I've taken upon myself a modern/global idea of "noblesse oblige". The fortunate have an obligation to use their vast resources in a way that benefits others. We are fortunate to live in the West during this time, but that also means we have access to tremendous knowledge and ability that we are uniquely equipped to make good use of.
Of course, I may just be fooling myself and the resources I consume would still be better spent directly helping others.
I try to be clear that I'm far from a saint in this respect, but it's difficult to discuss these things with others without inducing guilt and defensiveness. I think these kind of things needs to be discussed though, so I'm glad you brought it up.