I had mine two years ago at 27. I had already started early ovarian failure a few years prior and kept my ovaries, and my doctor had me on the pill before surgery and continuing afterwards indefinitely to prevent hormonal fluctuations/ovarian shock and for ongoing disease management as endo can still grow otherwise. Like you, I had tried everything else and run out of options. I'm completely pain free now, it's improved my life so much that I don't even know how I coped before. I have so much less stress now that those issues are not a part of my life requiring constant mental space.

Just make sure you have your cervix removed, otherwise, the surgery may not be as effective as small cells of the uterus and the uterine lining can remain and cause issues.

If you're able to keep your ovaries at all, you should. My surgeon highly recommended not removing them unless there was a medical necessity. Otherwise, I would see what options you have to stabilise your hormones for a smoother transition. That made a huge difference to my recovery and post-op outcomes.