In the last few years I have become an increasingly vocal atheist.
Over these years I have been amazed by how many other atheists and agnostics I have met. Most of them don't talk to other people about it but once they find out that I am they open up and start saying things like "how can people believe things like that?".
I feel really good that I can be a sympathetic ear and a good source for rational thought and scientific knowledge.
The only thing I struggle with is the occasional "You're an atheist" How can you be sure there is no god?".
Now online and when I have a bit to think about it I can answer easily but when I am confronted with the different arguments that the different people bring I seize up.
I really need to work on my responses to the common questions more.