You keep challenging me to refer to Scripture; I do; then you say that we can't learn anything from it, because there's no teaching in it. Really, this circular reasoning is unsatisfactory.
As for intentionally impairing a healthy physiological function, your example of bariatric surgery is not applicable. In a morbidly or malignantly obese person, the processes of appetite-digestion-absorption are already abnormal and unhealthy (pathological), and the stomach bypass is a step toward restoring, not destroying, healthy physiological function.
THe legitimacy of medical intervention rests of the intent of preserving, restoring, or at least approaching healthy function. If that involves the destruction or removal of an organ (e.g. hysterectomy for uterine cancer), it's a legitimate treatment for an actual pathology.
It's quite another thing to impair a healthy function precisely because you don't want it, as is done with that most-rejected and disparaged bodily power, fertility.
Therapies which produce sterility as a double-effect (for instance some chemo-radiation treatments) are licit because their motivation is not the desire to induce infertility, but rather to cure an actual disease.
“Want an X-acto knife to delete Genesis 38 from your Bible? ”
No, instead I honor God’s Word by rightly dividing it. And it offers no support to your assertions.
Unfortunately, it’s the closest thing in God’s Word you can point to - and the only thing.
I’m happy for you to hold this personal view, but it doesn’t come from God and apply to all Jews or Christians.
If it did, in ten posts into this, you’d have backed up your assertion from His Word.
Best.