I've been meaning to sit down and write a post about this same topic. I have never had the desire to bear children, and I totally agree with you that it is a choice! A big decision that I think some people make way too flippantly. I'll eventually get out all my thoughts on this, but until then I just wanted to throw out a little support your way. I know all too well how challenging it can be when people question you on this instead of respecting that you know your own mind.
Thanks for chiming in always good to know I am not alone =)