Anyone treated Endometriosis successfully?

Hi everyone

I started experience pelvic pain, abdominal pain, GI problem in April this year. After a whole lot of tests, scans, and colonoscopy, everything came back clear. Then my GP suggested I may have endometriosis. So I went to see an advanced laparoscopic surgeon who sepecialises in endometriosis. After I told him my symptoms he said I have (suspected) adenomyosis and endometriosis. His suggested treatment plan for me is laparoscopy to diagnose and excise the endometriosis (if any), hysteroscopy and insert mirena. I am not doubting his expertise, and I accept that my uterus is bulky and that I may have endometriosis in my pouch of douglas because I can feel the pain is from the left hand side of my rectum.

From the posts I read here it seems everyone is having a hard time trying to be taken seriously and have to push for a laparoscopy. My problem is opposite to everyone else's. Sure, I experienced pelvic pain most days since April and get bad back pain during period which I used to never have. But none of those pain are enough to stop me from doing my daily routine. I don't have to take any painkillers for them.

I don't want to take the risk of surgery, or have any hormonal drug which could potentially give me more grief (from side effects) than I currently have. So I told the gynecologist that I don't want to do anything about it for now. I am not sure if it's the right decision because I am not sure if any downside of not doing anything about it if the pain is manageable? For example, is it possible to have really bad endo that is damaging my organs and I don't know because I didn't go for a diagnostic laparoscopy?

Also, all I read is everyone is struggling with the side effects of the drug or had multiple surgeries. It seems surgery is just another temporary fix. Does anyone know anyone that has had 1 laparoscopy and they are pain free indefinitely?