46 and had my second colonoscopy last Friday. I'm on a 5-year rotation, thanks to my Mom's colon cancer. She's so happy I'm sticking with it; moved to tears, actually. My older sis hadn't had one in over 10 years, so I let her have it & she's scheduled for next Tuesday. We even got my bro-in-law, who's 50, but has no history, to schedule his. All in all, it's a little inconvenience that can save you from life-altering illness or much worse.
Do it!
Do it!