Tried responding earlier but HN is in the habit of blocking me.
Basically... The telos of sex is reproduction. To separate reproduction from sex renders sex meaningless, and thus irrational from an aristotelian perspective.
The typical objection is that sex is also for pleasure. However, Aristotle considers base pleasures like sex not worth pursuing.
Now another typical objection here is that this could mean that ivf should be pursued while we don't have sex. This is I suppose where some religion may come in since Christianity typically sees sex within marriage as a good to be pursued. Nevertheless, I've not heard any modern argument that says we should eliminate sex and sexual desire and pursue only ivf.
So basically, separating sex from reproduction renders sex meaningless and irrational.
Basically... The telos of sex is reproduction. To separate reproduction from sex renders sex meaningless, and thus irrational from an aristotelian perspective.
The typical objection is that sex is also for pleasure. However, Aristotle considers base pleasures like sex not worth pursuing.
Now another typical objection here is that this could mean that ivf should be pursued while we don't have sex. This is I suppose where some religion may come in since Christianity typically sees sex within marriage as a good to be pursued. Nevertheless, I've not heard any modern argument that says we should eliminate sex and sexual desire and pursue only ivf.
So basically, separating sex from reproduction renders sex meaningless and irrational.