Excellent point
And often.....they do find something
Even if just a fold or mucosal prominence.....both more common than not
Over 55 I wonder what the incidence of a completely unremarkable colonoscopy is?
About 50/50 I read....odds worse as age increases
In my first 3, starting at age 48 (1996, 2003, 2007) they found and removed 2, 2, 1 polyps, all benign.
In my last one, age 65 (2013), I had no polyps. I was ecstatic!