"With great power, comes great responsibility."

~ Uncle Ben Parker

There are a great many "BioTruths" that are complete and utter fictions; expectations and interpretations purely invented and enforced by culture without any real basis in fact or science. However, there are some identifiable biological differences between men and women which are real. Rather than devolve into bickering about the entire range of invented norms, I would prefer to restrict this discussion to just those factual and identifiable differences. I believe it is factual (beyond question) that there are at least two real "BioTruths":

(1) Men are mostly larger and stronger than Women. (This includes relatively smaller men who are still stronger than most women of the same size or larger, as an artifact of muscle ratio.)

(2) Only Women can grow a child inside themselves. (Men physically lack a uterus and cannot grow a child.)

Given these truths, I am curious to know if we can establish any realistic and appropriate behavioral social "norms". This is an exercise in extrapolating moral shoulds from mere biological facts, thus we run into the is-ought problem, but I think some well-reasoned arguments can be made concerning what we should endorse behaviorally as a society, given these real differences.

I will begin with point (1) and take the position as stated by my opening quote: "With great power, comes great responsibility." Without over-reaching, this can be interpreted to assert that, at a bare minimum, a person with greater physical size and strength bears the inherent responsibility to use that ability ("power") wisely. A big/strong person has the opportunity to abuse that power by using it to"over-power" (physically dominate) or coerce (psychologically intimidate) relatively smaller/weaker persons, but as we would consider these behaviors immoral (outside of the proper context), I believe this creates the inherent obligation to be self-aware of how size and strength are applied; to be "responsible" for the use of that "great power".

This power itself is neither good nor bad; as with any tool, the moral judgement of expectations and prohibitions comes from how that tool is used, and why. The alternative is to be unaware of this power, to use (or misuse) it capriciously (without considering consequences at all) or maliciously (intentional abuse of power for self-gain at the detriment of others; to "prey on the weak"). Thus I would conclude that (most) men's greater size/strength (ability) creates an obligation: men bear the responsibility to use their greater size and strength wisely (properly/appropriately) when applying that tool to situations involving women (and relatively smaller/weaker men), and that this is an obligation men cannot escape or eliminate in all situations involving relatively smaller/weaker persons.

Can we draw any other logical and appropriate conclusions from these real biological differences? Are there other clearly existing BioTruths you would say do exist, as well?