The solution is quite simple. Get the government out of the business of deciding what constitutes a "marriage" or not. It's a purely personal decision.
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As you know the simple is often complex.

Unraveling family from marriage is a big job.

I do not disagree that this path makes sense, I agree.

I heartily disagree if you are saying it is easy or straightforward.

I didn't say anything about "unraveling family from marriage." People would still get married.

And I didn't say it was easy. I said it was simple.