To wonder why more Men are childless than Women?

[Sunnysideup37]

I’ve been doing some research recently in population statistics and I have comes across the statistics that a quarter more men are childless at 45-50 than women. But I don’t fully understand why. The gender gap in society is no where near that? I am starting to wonder if those figures are an overcount because many men are not officially registered as a father to their kids when a woman can’t avoid being in the records for giving birth

Single women or lesbian couples have children on their own with a sperm donor so the father would not be registered.

Men do this too with a surrogate but it's probably a lot less common.

A woman giving birth as a surrogate is still classed as a woman who has given birth in regards to the childless women statistics.

However an woman who has become a parent as result a surrogate giving birth or has adopted a child is classed as childless when they not legally so.