My father is alive because of this. I’ve done it too, obviously I’m high risk group (get the pills if you don’t want to use the slime prep). It’s a day of bathroom visits and then potentially many years of being not dead.
Well, I am of colonoscopy age now and I got my first-ever one yesterday. The prep wasn't fun but not as awful as I'd imagined. My appt was at 6am on Monday, I was home just after 7am. There's no recovery except catching up on the sleep you missed. So, if you need a nudge to get yours, this is it!