When I was raising my kids, one of my girlfriends had 9 another close neighbor also had 5 like me and she was baptist. Years later we laughed about that when I told her that I told my priest that I knew she was catholic cause she had 5 kids..... I think casual conversation as you talk about is quite different than a in depth discussion on why you don't use BC with a stranger.. Its still no one's business except the 2 involved...
For me just the though of discussing someones BC without an invitation to discuss it is stupid. It also is not for me to judge if they do or don't....
Your answer has no judgmental aspects to it...and was a delight to read....7 makes you more experienced than me with only 5. They are all in their late 40's to early 50's and have given me 13 most excellent grandchildren....
PS If any one made a comment to me like your #1, they'd get a not so pleasant ear-full...
So, you believe that America's adoption of non-judgemental permissiveness over the last several decades has been a positive development?