It’s true that a man’s sterilization surgery is not the sane as homicide (abortion) of course-— killing your baby is far more serious than maiming yourself sexually.
But as a matter of justice, a man should not sterilize himself without his wife’s knowledge and consent. (And the same for a wife sterilizing herself.)
Assuming they are both physiologically normal and of childbearing age, husbands and wives have a reasonable expectation that they will be able to have children together. Traditionally, their bodies (complete in every detail) belong to each other, since they have given themselves to each other in sexual union and are now one flesh.
For either one of them to sabotage himself or herself sexually, would be a kind of fraud.
“For either one of them to sabotage himself or herself sexually, would be a kind of fraud.”
And IMHO, render a sacramental marriage invalid...