I was younger than you when I had an exploratory lap which revealed that the pain (bad enough it used to make me grab the wall) was from widespread endometriosis. It was everywhere, and there were adhesions as well, thought to be secondary to the endometriosis.
I already had one child, had wanted many more, and was a newly wed.
I bargained with my docs and got a year in which to attempt to become pregnant, husband had a terrible car accident halfway through that, and nothing baby-wise happened.
There apparently were no drugs being used at the time, or maybe I was too far gone for medical intervention, I don't know.
I had a total hysterectomy, ovaries and all. Apparently my preop pain was worse than I had realized, since I was in no pain less than 24 hours postop, walking up and down the hall, bending over and touching my toes. (Of course the surgeon claimed my miraculous condition was because of his superior technique.) The pain from the hysterectomy was nothing compared to what I had been enduring.
No one told me I would be dumped headlong into menopause, or that even though my head was okay with never having menses or the possibility of another pregnancy, my heart wasn't going to "get it" for about ten years.
I controlled the physical symptoms with monthly injectable Depo-Estradiol (worked better than any pills I had taken before or since), but that aggravated my fibrocystic disease. About two years ago my doc talked me into oral meds. I suspect any estrogen (my own or artificially supplied) would have aggravated the breast problems.
When I turned 49, and was in nursing school and got distracted such that I actually forgot to take my meds for months, I realized that I felt just as good without them, including the estrace. I've been off everything now for more than a year, my only problem is the occasional hotflash. I just drink a cold bottle of water and it disappears. Never thought of that when I was younger!
Anyway, I figured, if I was a normal person, I'd be having menopause now, enough is enough. The breast specialist thought that was great. I don't know about my GP doc, since I fired him shortly thereafter for other reasons. So far, though, there don't seem to be any problems. I don't have the dreaded vaginal dryness, I am not any more moody than I was (maybe less so), I didn't get acne and the few little whiskers (oh, yes) that I used to get are less now, and grow much more slowly. So, all things considered, I'm pretty pleased with where I am physically, and (and this may not be a proper use of the word) gynecologically.
Bottom line, I wished I hadn't had endometriosis, I wished I hadn't had the hysterectomy, I wished, I wished, I wished.
But what I got was what I got. The only advice I can offer to you is to make your best decision with the info you have now, learn how to accept whatever it is you decide to do, and then do it. It sounds like you are pretty uncomfortable and that you have exhausted nonsurgical remedies.
I don't know why you would keep your uterus without ovaries since you could not (I'm assuming) carry a pregnancy and would not have menses. Ovaries are pretty important hormone producers, they send chemical signals for other organs to pay attention to, and without them, the rest of the machinery doesn't work. Your uterus remaining without any purpose is, in my mind, just leaving you with an organ which can become cancerous eventually, and which will be doing you no good between now and then. If you are dumping your ovaries, I'd get rid of all of it.
The good news is you can have a perfectly healthy life without your reproductive gear. Thousands of us have. They say there is no testicle to bad to remove, or any ovary good enough to keep (reflection on the misogyny of surgery).
Thank God you are not debating whether to keep your kidneys or lungs or something else seriously vital!
I do believe that if you keep your gear for the next 25 years until menopause stops the whole shebang, you will spend the next 25 years focused on your discomfort, where you are in your cycle, etc. Chronic pain does not make us stronger, it just makes us b***hier. Your own quality of life should be a consideration.
How important is it for you to bear children? If this is not a big deal to you, since you asked, I'd have everything removed. Take hormone replacement once a day (or once a month, as I did), and the rest of your life is your own, unfettered by the signs and symptoms of your disease.
I wish you luck, as an endometriosis "sister," and offer you a shoulder or an ear--feel free to email.
On the positive side, there was research at the time I was where you are that indicated a strongly postive correlation between, of all things, endometriosis and intellectual development.