Because women aren't important. We're supposed to just "suck it up", and stop whining, because "it's natural". At least that's the attitude I received from the time I started seeing a doctor around 18 until I finally got my hysterectomy at 49. Best thing ever. I had endometriosis, and I don't know if diagnosis has changed in the last 13 years, but when I had it, the only way to diagnose it was surgery.