I don't think you are odd feeling this way. However I do think that people are just curious and they probably don't even know why they are asking the question. I mean really what is it to someone if you've had a natural or c-section? Is it going to change their lives?..nope not one bit but humans being curious creatures tend to have a compulsion to ask questions albeit appropriate or not.

I often find that people who haven't had a child ask the most inappropriate questions. I put it down to lack of experience. I should know I was one of them once upon a time. Some questions I used to ask I would never dream of asking now.