I too get in the "zone" or mindset, jealous however you want to put it. When ever I see anything infant related. I even ask my wife the other day. Does it make me a freak? I hope it doesn't make me look like pedophile. I do not stare but I catch more then one look when I see a stroller or anything related to little I just can't help it.
But to back it up I want to be very clear I never want to touch the Child or do anything of that nature just like others have said I want to switch places, I want to be that small again and just enjoy it.