This was a pretty good article from Alternet by Greta Christina on questions that some atheists may find annoying or downright insulting.
Our family has only recently become secular. With the exception of my mother and brother, we haven’t had many discussions with our other religious family and friends about that change. I imagine it’s a fairly uncomfortable subject for most. But I’m certain some of the questions on this list have occurred to those that know we are not religious anymore.
What stood out for me were the the questions about being moral without god and finding meaning in life apart from belief in a god. Both take a great deal of personal responsibility. It can be scary to know that it is solely up to you to make life decisions for yourself and to create meaning in your life. But, as many atheists who were formerly religious can attest to, coming to grips with that reality ends up being quite liberating. It feels like chains have been lifted from your neck, as you do not have to be guided by guilt trips to think a certain way or to make a certain decision. You can use reason, logic and true compassion, while looking at each challenge in life on a case-by-case basis. You can be comfortable changing your mind about something once you get new information. Which makes perfect sense!