[Serious] Please convince me gender is binary

[bennyboy]

Determining that somethings a social construct does not mean that it's a product of toxic masculinity made up "out of thin air". 

That said, I don't think you have your finger on the pulse of what this thing is made up of by reference to your explicit assumption of a specific representation of binary heteronormativity.  You may view males as inauthentic caregivers and females as inauthentic workers but this much is explicitly cultural.  Not made up out of thin air...cultural.

No, not at all. But to establish norms, you have to look at the numbers. There are some great dads-- I was one of them, I think, taking care of my daughter starting about 4 months, while my wife worked her teaching job. Then she'd come home, and I'd go off to my evening job and she'd take over baby duties. Tough life, tbh, but very rewarding. But that required a lot of technology-- breast pumps, good refrigeration, formula foods, and so on. Without those, baby would last about a week with mommy gone so much until it wasted away and ceased to exist.

Anyway, it's mostly a product of our efficient and rich society that we can enjoy these forays into new structures, including an exploration of new identities. "Social constructs" and BS words like "heteronormativity" will die pretty quick deaths when hard times strike.