I'll grant that hospitals, programs for the poor, and other social services are good deeds... as long as prosletyzing isn't the price the recipients have to pay and the good works really are good (More about Mother Teresa in another post)
At the root of these good works, though, is selfishness. The motive isn't true empathy for suffering but a guarantee of a place in Heaven. A secondary though possibly more powerful motive is to be seen to be doing good works. If you're doing good things you must be a good person, right? And if you do it in a group and happen to have an enjoyable time with your friends-in-Christ well that's just icing on the cake. You'd work on a Habitat for Humanity house in a crappy neighborhood on your own, wouldn't you? You don't need a church bus to take you there. And then there is the whole doing-what-Jesus-says line. Jesus said feed the poor, so obedient Christians will do it because he says to do it. That's hardly an unselfish reason. Getting in good with your savior, whose blessing will keep you out of hell. Very nice.
The worst example of selfishness, I think, is prayer for some earthly benefit for oneself or one's loved ones. A friend from Houston recently posted to Facebook thanking friends for their prayers. They finally had rain. Hallelujah!
Rather than forward her selfish post to my friend from nearby Bastrop, who continues to be traumatized by the huge fire there, I sent a PM with a general skeptical view of prayer. I also pointed out that if God was so good, why not send the recent hurricane that was a near miss all the way over to Bastrop to put out or prevent that fire? Not to mention, why did God allow Texas to endure such a dreadful drought in the first place? And why did he ignore Perry's prayers and that big prayer hoopla thing in Houston, but answer the prayers of my friend's friends around the country? Why did God wait so long? And speaking of timing, July & August are usually the dryest months in Texas, and coincidentally, God answered her friends' prayers in September, when it's much more likely for Texas to receive rain.
Well, I did make some of those points in our exchange but what I bit my tongue about was the utter selfishness of believing that God will answer prayers for better weather just for her. Apparently none of the people who lost everything in the Bastrop fire had any friends who prayed for them, or else their homes would have been spared.
Chrisitans are also selfish in their entire theology of redemption. In theory, you just have to be a believer to be spared the punishment of Hell. This in itself is supremely selfish. Character doesn't really matter if being "born again" or "saved" or baptized is all it takes. Too often they write off the other Christians who don't live up to charitable or even moral standards as not true Christians, but then if pressed they have to admit that the standards for who can be called a Christian are very low.
John 3:16 makes it pretty clear: For God so loved the world that he gave his one and only Son, that whoever believes in him shall not perish but have eternal life.
How nice for them. That's all they have to do, just believe. Fuck everyone else, and fuck the people who didn't get rain this month. They didn't deserve it anyway.
Evangelicals have a bit of a claim in wanting everyone to be saved, but salvation is still a selfish concept. What about "Do some charitable things and you'll be repaid with thanks from the people you help?" If that's all there is to missionary work, some might do it anyway. That's because unselfishness is as much a part of human nature as selfishness is. This is why they fear evolution -- it might show that living in a community requires a quotient of unselfishness from every member, or at least a big enough plurality to keep the community going. And if humans are capable of being generous, kind, and helpful without a God to tell them to do it, what do they need God for? And if rain happens whether you pray or not, why pray?
The answer is: selfishness. They may even know their prayers are worthless, but they do it to remind themselves how special they are compared to everyone else. It's sickening.