[DuncanWaring]

It might be an instructive question to ask a leftist “Why do you worship sexual intercourse?”

Because sexual intercourse leads to pregnancy and pregnancy leads to abortion.

And they worship abortion.

Because they worship death.

[MrB]

The family - father, mother, children - is valued by God as a glory to Himself.

Unmarried sexual intercourse is detrimental to the institution of the family, so of course the left promotes it.