No, group marriage was not the norm - we've gone through this already. It certainly wasn't the norm in New Testament times. It was recorded - but that doesn't mean accepted or promoted during ancient Bible days.
Oh, please. What a load of not-very-convincing rationalization! This is the sort of thing that gives Christianity a bad name.
Disagreement with redefining marriage does not equal hate.
Not necessarily, I agree. But often.