The best part of a colonoscopy is when they start the anesthesia into your vein; that 2 or 3 seconds when it starts to kick in but before you go out.
No family history that I know of, just glad I didn't wait for it to turn into something worse. They did tell me my kids should get it done at 30.Good for you. May not have made it to 45. Any family history? Yes, 40 is recommended when family history exists. I told my sons (48 & 46) to go at 40. Oldest dragged his feet. Told his nurse Wif our family history. She handled it.
It really is a simple, painless procedure that can save your life.