Okay, that's just a little bit of bullshit. While there's been evidence to indicate that kids do better with at least one parent readily available full-time, nothing has shown that that parent has to be the mother. I know plenty of fathers who have been better primary caregivers than a lot of mothers I've known, and I think you're doing a real disservice to men by perpetuating this "No care about babies! Breadwinner! Manly man! Hapless oaf akin to Ray from 'Everybody Loves Raymond'!" stereotype.
And women aren't "wired to be better and more capable caregivers." Women are physically equipped to gestate and nourish babies and socially conditioned to be caregivers.
I think what he was trying to get at was simply that there are a number of bonds build between the mother and the child while breastfeeding. There are a number of studies that suggest this bond continues through the teenage years. Men can't breastfeed and therefore can't build those bonds. Can men be incredible parents, and the primary caregiver? Yes, but he still can't breastfeed and therefore won't have that bond.
It's amazing how the barbecue is shaping up. Here's my $0.02:
It's your decision. No one on this board should sway that decision. They may be able to give you advice based on career paths and whatnot, but they should not sway your decision to start a family. That is a decision that MUST be made between your and your SO. With that being said, my wife and I talked about it at length before we got married. She's not a pilot, but if/when we have kids it will be when she's on shore duty. She loves the Navy too much to be the primary caregiver, so guess what - I can't imagine a better job than being a full time daddy. Why on shore duty? Because it's the best time... Not a problem for her, since everything is a non-flying billet for her. But then when you start to factor in IA's, etc... there's never really a good time as long as you're on active duty. Try to do it on a non-flying shore tour, but ultimately you'll be in the military for 30 years tops, and you'll be a parent for life. I will reiterate - that decision must be made by you and your SO.
And for the record, men and women are now afforded the same amount of maternity leave. So, as long as it's not in a flying billet - there really should be no difference.
Do men get frustrated with women because they're given "special" treatment over men? Yes. But I can see the other side of the coin, since my wife is active duty. On occasion, everything she does is scrutinized because she's a woman. Yes, that's a broad generalization because there are a number of officers that treat her the same as men, but there are a few that don't. Surprisingly, the worst FitRep she ever got was a woman who grew up in the "old Navy" and graded her harder than her male counterparts because she had to prove to her that she was a worthy "woman" to continue.