“force the public to pay benefits for relationships that are not procreative and typically are not even monogamous”
The first is assuming it’s the governments job to police this function, which it is absolutely not(also barren couples, dickhead). The second is irrelevant even if it was somehow true if all of the partners are happily consenting, polycules exist and you can’t erase this fact.
“as can be shown by scientific device of thought experiment used for investigation of nature of things.”
Bitch, you wouldn’t know a scientific device if it walked up to you and kicked you in the bollocks.
“contrary to thousands of years of success based on a one-man/one-woman marriage system”
AHAHAHAHA no. Just no.