Nature has become something for man to dominate, subjugate, manipulate, and modify.
There are only two sexes, male and female. The biological sex of an individual is discovered, not assigned.
Protestants can and should use natural law arguments to help society pursue and protect the common good of all people. By pursuing and protecting the common good of society, peace in the earthly realm is promoted and protected. This allows for the freedom peacefully and publicly to present the Gospel to all men, which all Christians should desire. As such, natural law can be used not only to promote civil goods, but also eternal good.