Of course I'm not serious, but then I personally don't care if there is a wage gap as long as it is not being caused by workplace discrimination against women.
If instead it's the case that the wage gap is caused by women (disproportionately to men) making an informed choice to de-prioritize work in order to prioritize childcare, then I am totally alright with that.
Maybe the impact of the wage gap is too big even if it's caused by women making informed choices. We could choose to offset it directly, for example by subsidizing children -- kind of like a basic income just for kids. By doing it that way we could make the system largely agnostic about whether it's a father or a mother deciding to prioritize childcare over work in any particular case.