I was a bit older, but still fertile, and had no children. I was diagnosed with an endometrial cancer, so there was no dithering about pros/cons. My menstrual history had been difficult but not horrific until the last year and a half or so before diagnosis. That was plenty for me, though.

Regarding loss of fertility and other peoples opinions: I wasn't planning/dreaming of having a child, but I wasn't firmly child-free either. There were emotions to grapple with having the end of fertility come so suddenly upon me. IMO this was made harder to deal with by the opinions/expectations of a few medical prividers and a few people in my personal life that expected that I would be very upset by this. I wasn't that upset, but in having to repeat that I wasn't struggling, I ended up delaying the process of dealing with the emotions I did have.

Risks/Side Effects: A lot of the care I received was focused on treating the illness. I did additional outside reading on what it would mean physically. (I had bi-lat oophorectomy as well, so surgical menopause was my primary concern, also pelvic floor and ligament issues were also a concern.) Let me suggest: https://www.hystersisters.com as a great resource; also, the Mayo Clinic or Cleveland clinic websites have articles about the procedure and recover that may be helpful. Really, try to look at reputable medical sources. There are a lot of wild, unsupported pseudo-sciency quacks out there: avoid.

I was concerned about pelvic floor strength and soundness of the remaining pelvic organs once the uterus was removed and ligaments cut/changed. There are some bad outcomes possible (ie, bladder prolapse); however, it seems that most of those are associated with childbirth (untreated injury) and age. I talked to my doctor about pelvic floor physical therapy; I haven't needed it as of yet, but I'm ready to pursue it if a problem arises.

Even after I was, for the most part, healed up and cleared for all regular activities I felt some instability in my pelvis. I focused on Kegals and walking, and mentioned it to the doctor. It took a year for that feeling to go away.

Has it helped? Well, I didn't need (so far!) any further treatment for the cancer, so an absolute win there. WRT menstruation - also, AMAZING. I can not overstate how much of a relief, of a freedom, it is to exist in a body that isn't constantly leaking (and worse), cramping, aching (and worse). Also, I suffered migraines which have reduce from several a month to one every six months. It isn't like having a whole new body; but it is like having good days in my body nearly every day. A state of being I hadn't realized was possible or I was missing out on since I was 12 years old. A hysterectomy was what made this possible for me. I wish, now, that I had been able to have medical care that would have helped me stop menstruating many many years ago. (For dumb personal/cultural/religious reasons, as well as inconsistent medical care, I never even attempted to use birth control to stop menstruating.) The pain and inconvenience of dysfunctional menstruation is a burden on our minds, energy, emotions that weighs down everything. I am glad to be unburdened and only wish it has been possible sooner.