Rather than focus on the unnatural-ness of consummating the homosexual relationship, perhaps another effective strategy would be to show how many homosexuals die alone without a family construct to look after them or being them comfort in their elder years. IMHO
Not a valid argument. Many of my neighbors are single heterosexuals who never married or had children. They are now retired. Their parents have passed away, leaving them to ponder their own fate, alone, with no family construct.