I recently ran into one of the tried-and-boring christian come-backs against atheism: “if you don’t believe in god, how can you find joy in your life?” You know, that kind of yawner.
The brief response to that, by the way, is “pizza” – which leaves your interlocutor in the awkward position of having to argue that pizza is a gift from god, or that god invented Naples and therefore pizza, or something equally stupid. Unfortunately, that will not hinder christians’ willingness to deploy stupid arguments on demand.
Instead, I refer people to philhellenes’ youtube video, “Science Saved My Soul” which is pretty damn good, especially because it’s slightly cheesy (speaking of pizza: pizzas should not be slightly cheesy)
In case you haven’t seen it:
I remember when I used to sometimes watch various atheist videos on youtube, until it turned out that their authors were just creeps who were beating on christians because they offer themselves as easy targets for contempt. I prefer philhellenes’ approach of pointing out how cool things are, rather than the other approach, calling christians stupid. They’re contemptible, sure, but we should pity them.