I had my ovaries removed, along with everything else, back well over 20 years ago. I had stage 4 endo, ovarian cysts, debilitating periods, and a host of other things.
For me, things like depression, irritability, and mood swings improved because I wasn't in pain any longer. I'd been living with chronic pain since I'd started my period, and my entire life changed with the surgery.
It's not a cure, and it has it's risks, but for me - and it may not be the same for anyone else - it was a blessing.