I have a lot of friends who I've talked about my faith with. But the topic doesn't just come up. It's very hard to know how to take the conversation into a religious direction unless the other person does it for you. This is how it seems to me anyway. I have never had the obvious openers like "I wonder why we're here?" Most people don't speak like that upon first meeting me and when it does come up they know I'm a Christian and may not care to be evangelized to. Not everyone is looking to be saved it seems. Or maybe it's just my experience and I need to get into different people groups.