I'd recently begun wondering about the fairness of having this done to defenseless male children for much the same reason as I would refuse to inflict ear-piercing upon female children.
But I don't think I'd ever care enough to bother with this.
There are those who might suggest a lack of sensitivity is beneficial.
Or maybe that's the problem -
I do have a certain amount of envy...
Humans are weird.
addendum:
Girl hyenas are weirder? Wow!