[rcktmrtn]

> Does every stable relationship involve sexual aspects?

Not generally. But creating a child necessarily involves creating a stable biological relationship primarily with two other people.

Most people across history think the biological circumstances that bring us into the world are spiritually important and making the triangle between mother-father-child healthy is good for children.

For better or worse, people care their genetic material. We can either choose to create a society that makes the best of this, or we can try to suppress it and convince people that it doesn't matter.

And yes I know that surrogacy exists. But that's a side argument that opens up a lot more questions and I don't think it really changes the fundamentals.