OP > I am sorry you had to experience this. Surely though, you had been informed what would happen with the cut nerves and loss of sensitivity of the glans?
If you hadn't been informed about these things, sue the goddamn doctor!
Grownups can make decisions for themselves, but they can only make proper decisions when given proper information.
Babies can't make decisions, and grown-ups should protect babies. They should not bring knives anywhere close to babies genitals, unless the baby's health or life is in danger.