What you fail to see is that making a good game one day would be a form of "good". Giving something back to people for them to enjoy. Make that great game that people love, and you've done something good for others. I've always seen it as any good that you can do for others is something that should be done. Not for some brownie points for when you die (my main problem with most religions, hence why I do not have one), but just for the good of others in general. Small things, big things, they all do matter.