There are at least three issues here, which to my mind all deserve serious discussion without our sidetracking into the other issues.
Women tend to live longer than men, so if couples are to be able to look forward to retirement together perhaps this should be taken into account.
Men have earned more than women doing the same job, and still do in some countries, Therefore they have paid more into pension funds than women if their pensions were based on contributions as a percentage of their earnings, which is I believe the case in most countries.
If the human race is to continue women will continue to have children at least, so I hope! At no time has any democracy rewarded women either by state payments or paying money into pension funds whilst women were having or rearing their children.
The old Soviet dominated Eastern block did compensate mothers by allowing them to retire a year earlier for every child they had had than other women of their age, who either had fewer or no children.
Hitler and Mussolini talked about the dignity of motherhood and it being every German or Italian woman's duty to have children - Mussolini handed out medals to mothers of numerous children - Hitler made dowith talking - something he was good at.
No-one has ever found it necessary to compensate mothers financially for the time they spend, willingly or otherwise caring for their children.
It is about time some governments did come to terms with the fact that fewer and fewer women are likely to feel they can afford more than one, or at the most two children if having chldren means they can look forward to an old age in poverty. So increase women's pension funds by equating nine months pregnancy plus time off after childbirth with the same time spent working in a paid job.
And whether or not women have children, pay them at the same rate as men doing the same job or type of job.
After all the old reasoning for paying men more was that they had wives and families to support. This no longer applies in the modern Westernized world - women are educated, work, pay taxes and have dependent children and often aged parents as well. So pay them a wage that takes this into account.