Men are less "motherly" because we are discouraged by society from being that. Even your choice of words shows your prejudice.
I was my kids primary parent when married and a single dad after divorce. I am MUCH better suited to raising kids than my ex-wife was. That is largely a result of how I was raised to have empathy and care about people.
My implication that being motherly is good for a primary child raiser shows my prejudice? It's actually just a random phenomenon detached from fitness?
What's your opinion of apple pie?
Most men are worse parents than most women.
Do you think that is a good representation of what you are saying? Do you think it's true? Are men inherently worse at parenting, or is there something else at play?
And I would also like to know what your evidence is for that.