... unneeded physical one
You have been asked and haven't yet explained why you feel a union between same sex partners is "unneeded" while a union between a man and a woman is somehow needed?
Do you believe that a marriage between infertile hetero couples or hetero couples who do not
wish to procreate should not be allowed in christian churches?
should a married couple who are unable to procreate immediately divorce on learning this?
you need to clarify why you feel a heterosexual "needs" marriage more than a homosexual.