Family history is what's got you on a more frequent schedule.
A lot of people don't get the procedure because of what the procedure entails, but whatever shame one may feel, is a very small price to pay for preventing a horrible way to go that will take a great toll from your loved ones.
I think I got lucky. I was heavy into lifting weights, which unbeknownst to me, gave me a couple hemorrhoids. One day, one burst, and it was like I had a period. Doctor said I should get a colonoscopy anyway just to make sure, and lo and behold, polyp. I was 29-30 at the time.