Unfortunately the only person who can make the decision is you. I had a hysterectomy three years ago when I was 30 after nearly 19 years of suffering endo, heavy and painful periods and laterly cervical erosions.
It is major surgery and would be pointless saying that the surgery was painless. Lots of women feel that it's going to make them feel less of a woman, but I can honestly say for the first time ever I felt good about myself.
Endo is for all those who have suffered it, one of those hidden illnesses. Nobody talks about it and very few people give you sympathy. I lost my fallopian tubes at 25, had an endometrial ablation when I was 27 and of course a few years later had the lavh. I did get to keep my ovaries, although they have a habit of going to sleep every now and again.
I wish you all the best whatever your decision - it's not easy, I know but you will make the right decision for you. :d