> When in truth, you just choose to think about something else instead: politics, your job, some video game, whatever.

But that is just not true for a lot of us: A lot of atheists spend a disproportionate amount of time considering these types of questions.

Though for many the answers to the above is: Why should there be a purpose? I'd rather choose one for myself. Why does matter if we can die and cease to exist at any moment? If there is no after life, we'd never know. Do you fear going to bed at night, worrying you might not wake up in the morning? Why would we worry about that - if we don't wake up, so what?

Incidentally I've never met a christian who assumed I was lying when I told them I was an atheist. A lot of them have wondered how I could be, and had questions about it, and I'm sure some thought I was crazy (the feeling is mutual), but none have ever implied I wasn't telling the truth.