I know from personal experience how amazing marriage can be. But I have also seen how much weight people, especially Christians, can put on the idea of marriage and how marriages should work.
Very often, the justification is down to a particular meaning attributed to marriage, with supporting arguments lifted from the Bible. Except, I’m not sure all of those meanings actually hold, or that that these interpretations of the Bible stack up.
I’m not against marriage, but the church needs to unthink and rethink a lot of what we believe we know on this subject.