My husband want a baby and I don’t

[Dutched]

We’re both 40 and have a daughter in med school. My husband has suddenly asked if we can try for a baby. I’ve said no, he thinks I’m being unreasonable.

Tell him to get a sports car like any other middle age crisis man.

Why?

It's not double standards to say that there's often a hormonal surge of broodiness from women in their early 40s as a last chance saloon, but has he said why he wants another?