I've yet to come across a person, no matter how wealthy, who thinks "I have so much extra money sitting around, I just don't know what to do with it all." We live a lifestyle according to our means (and sometimes beyond our means). An increase in income means an increase in spending - more dinners out, nicer clothes, a more expensive car, a larger living space in a wealthier part of town. We have wish lists of the luxuries we'll buy, the vacations we'll take, once we get more money. We always want more, so we spend what we make. While our wish list things are nice to have, they are far from necessities. And more to the point: you could spend that money to save lives instead of marginally improving yours.
June Walbert over at USAA has some simple ways to save $1,000 a month (and it doesn't mean moving to a small apartment or getting rid of your car). Her article is written in the context of saving money for an emergency fund, but the concepts apply to saving money to reach your philanthropic goals. What will you do with the money you save?