(December 11, 2017 at 11:20 am)Catholic_Lady Wrote: It's about what they physically can't do, not what they can. ...sex between a straight couple who is not married, or who is divorced and remarried, or who is married but has sex in a selfish way, is also contrary to our views on sexual morality.
For some reason, everyone focuses on the gay, gay, gay, gay, gay. They forget that Christian teaching prohibits all manner of fornication - anything outside a sacred bond. It really doesn't discriminate between impermissible homosexual and heterosexual relationships.
And it's not even all about sex but includes keeping one's word, caring for one's relatives, etc. It also extends into concerns about Man's social structures and people's obligations to their communities. But none of that matters to shameless people who only obsess about having other people affirm their sexual proclivities.
CL, I would however add a note of caution about relying too heavily on natural law. All of creation, including human nature, has been corrupted by sin and as such what appears to be natural, even among animals, is not necessarily as God intended it to be. Without some special revelation, natural reason alone could easily lead astray.