Excellent post Bruce02.
We all have a responsibility to educate ourselves (as adults) and our children about basic stuff such as this.
Also, reflecting on thisisafakename's post- society isn't some standalone entity, its us, women and men, and it's up to us to make decisions collaboratively with the person we choose to procreate with. A man doesn't suddenly, randomly, become a high earner with loads of assets any more than his partner randomly becomes a SAHM with several kids and not a bean to her name.
The OP said she'd been with her partner for 30 years, yet after having kids she'd never stepped up to working more than part time. That's not some inevitable consequence... there must have been a process of choices (and yes everyone's choices are made within certain parameters, but let's not pretend there is no choice)
And of course now in 2016, parents are fortunate in having the right to shared parental leave, so frankly it starts THERE. You want greater balance and equality? Then share the parental leave so that it doesn't by default become the woman whose career takes the battering.
I really hope that in a generation or so's time our daughters and granddaughters aren't buying into this tired construct that the default is 'have kids, man's life and career continues absolutely unchanged whereas woman lets her career get shot to pieces'
And as a bit of an aside, if the mans life really is continuing unchanged, then I'd suggest he's 'missing out too - maybe not in a financial/career sense, but he's probably not getting the time or interaction with his children that they deserve.
Cmon people- this is 2016!