The introduction of no-fault divorce was a much more serious blow to 'what marriage has been' than simply removing the increasingly meaningless variable of gender. I think CJK is at best falling prey to the 'anything that existed in society when I was born is normal and natural; anything introduced into society after my adolescence is an abomination' fallacy. At worst, and most likely, he is just a loathsome bigot.
And once again, if you honestly believed gender is a "meaningless variable" you should have no problem with immediate bathroom desegregation.
Why do you insist on referring to the bathroom situation as "segregation" ?
Racial segregation/Jim Crow existed at literally every public building and business in the South because it was mandated by state law.
No state law mandates that all bathrooms must be segregated -- there are unisex bathrooms everywhere, should a business or public institution decide to sign one that way. AND, unlike Jim Crow, penalties for breaking the rule are often nonexistent or light.
For example, if there's a long line at the men's room at a gas station and the women's restroom is empty, men will go use the women's room instead of waiting around unnecessarily. This is especially true if each bathroom just has 1 toilet so there's no chance of an awkward situation if a woman walks in. There is no analogue to this in Jim Crow -- blacks could not use white entrances, water fountains, seating sections, etc., in ANY circumstance, no matter how empty the white facility was. Businesses could not voluntarily allow race-neutral facilities, nor were they allowed to turn a blind eye if they didn't care. And unlike a person using the "wrong" bathroom, who at worst will probably get yelled at by an employee as long as he/she really did just use the bathroom and not try anything pervy, blacks would get in a lot of trouble if they tried to use a white facility of some sort, up to and including death.
Sorry man, the analogy to "segregation" is just awful.
