Men are more likely to be involved in a motoring accident, so they should pay higher insurance premiums.
Men are less likely to visit a doctor, or suffer from some chronic illnesses, so they should pay lower health insurance premiums.
Men tend to have shorter lives than women, so they should pay more for life insurance.
It's about time we stopped pussy-footing around the gender issue and accepted that there are differences between men and women that no amount of legislation will remove. We can try to put everyone on an equal footing until we're blue in our collective face, but millions of years of evolution says 'no'.
Vive la différence, as the French say. There's more to life than grey uniformity.