I'm okay with all of them, so long as substances are used in moderation, the sexual parts are consensual (for the polygamy I'm okay with polyamory). If I had to chose one that I was against it would be cloning humans, no I don't know why this one sticks out to me, and to be honest, I don't really care about it, and I won't ever vote against it, but nor will I vote for it. Really the only scenario I would vote for it is if some Hitler figure came along and tried to create a superrace, at that point is when I think the tech should be destroyed, until then go for it.