[AndrewDucker]

The only roles that nature put you into are carrying the baby and giving birth (and possibly breastfeeding). Everything else can be done by both parents.

(I'm a dad, who does do half of everything with the kids. It is possible, it's just a lot of stuff to do.)

[liveoneggs]

I doubt OP would agree with your assessment nor your use of the word "only" but I appreciate you. ;)