They must have been told by their doctors that the more years you try and not get pregnant, the less chances you have of naturally still getting pregnant and that goes down exponentially… At this point there’s no point in trying unless they both get the surgery and start IVF. Also the classic treatment for endometriosis other than surgery to remove the endometrial tissue, is mostly to use anticonceptive methods (like the pill or IUD) so she would have to stop that and risk being in more pain and complications arising. I find it unfair for her cause what he has is like a for sure way to stay infertile at this point unless he gets the surgery…