My son, Timmy, was lamenting the fact that he didn't have a bicycle the other day. When I reminded him of the fact that if he had one all of the neighborhood kids would all be asking to ride it or trying to take it from him, he got this resigned look in his eye and said, "I guess I really don't want one after all." It's hard to have things in an area where other people don't.
This made me think of Nene Teresa, ethnically Albanian though born in Macedonia. She, like all of those in her order, took a vow of poverty. While very noble, I think it very practical as well. If you are inspired to help the poor, and believe that the best way to help is to live in their community, it is truly uncomfortable to enjoy your "riches". I say riches loosely, as luxury is in many cases in the eye of the beholder. What seems like necessity to one may be a luxury for another.
Not only would it be in some ways more comfortable to take up a vow of poverty, but then when everyone asks you for money you can say in perfect sincerity, "I don't have it to give you but I can help you rebuild your house with my time and effort".