Yep! most of humanity are foolish blind optimists instead of being realists, and fresh atheists are not immune to this syndrome!
That must be really annoying; sorry that it happens. It's probably a number of factors. Some are just too quick with the mouse, some are just overconfident in their abilities to change a person (meaning that they might like something about you and figure they can make you concede on the issues of kids and atheism, which is of course unrealistic), some are too desperate to care (at that moment but are likely to change their minds later), and some are bots/scammers.
Amazing. I'd like to ask him for some tips. I'd love to get any interest at all from women. I wonder what he's doing to attract them.
Ugh. From my early teens right up to my early-thirties people always gave me the ol' "You'll change your mind when you get older." Well, bullshit; I'm 36 now and I still don't want children. I want them even less than I did before because a majority of my friends are older, don't have kids (or only have grown kids) and I love having the freedom to just randomly go away or stay out late at night.
Case in point - this past weekend - on Wednesday, I realized that I had plans to be 40ish miles from home Friday night, Saturday and Sunday, so I emailed the friend hosting one of the activities and asked to crash on her couch. I was gone from 6PM Friday to 11PM Sunday; can't do that with a kid. Oh, and the conversations we often have are not appropriate for children; we are not "wild" or anything, but we open discuss sex, piercings that small children should not know about (today we discussed why a "Prince Albert" has that name), and the wild pasts of a few of our crew. Heck, the females of the crew often embarrass the males talking about our boobs or underwear issues.