Yuck! I'm of that age now and am dreading the almighty colonoscopy. Not so much the operation, but the prep!
I'll trade you horror stories. A few weeks ago I went in for a major surgery. I'm deathly afraid of hospitals, doctors, and have never had a surgery before (still have tonsils, appendix, etc). The operation was set for 9 a.m. in the morning, so I'm there bright and early. My anxiety was off the charts. They hook me up to an IV and when 9 a.m. rolls around, the surgeon hasn't shown. 10 o'clock, no surgeon, so they postpone until after noon. 1 pm, no surgeon. I'm hooked to IV all day, no food since the day before, etc. At 5 p.m. they showed up and told me that the doc still hasn't shown up, so they send me home.
Do it!! Grumpy kept putting it off. I finally just made the appointment myself and TOLD him he'd better take off work and do the prep because he WAS GOING.
He had several polyps -- half of which were pre-cancerous. The doc told him he'd better be very grateful I cared enough to make him come have it done because 12-18 months later and we would have been having a MUCH different conversation.