I liked the post above, and understand everything he is saying. But without knowledge and experience let's admit we face more risk on a moto that we do on a forklift or a quad.
For those who have no understanding of the machine or potential for catastrophe, jumping on and screaming off is very scary.
Part of being a family is protecting other loved ones from risk.
IMO you have to make the effort even if it is ignored.
On another note related to the post, you don't need a colonoscopy "experience" now.
New product called ColoGuard is within .2% as accurate and is simply a stool test you mail in to them. Learned about it from my daughter who is a Pfizer rep. Need a prescription though. And have to fight (normally) with your Doc to prescribe it because hospitals make a bloody fortune off of colonoscopies. So they push back. But it is available to anyone on request.
And even covered by MediCare.
Which says a lot about how effective it is and how crappy the corporate hospital folks are. Pun intended.
And if it is ignored, at what point do you stop nagging the other person and just respect their decision, no matter how wrong-headed you think it is? Would you keep nagging a daughter about her choice in boyfriends, out of loving concern, until she just gives you the middle finger and elopes? And when constant nagging creates a break in a relationship, should that person pat themself on the back because, "well, at least I tried?". I totally agree that you should tell someone if something they're doing is possibly harmful to them, but I just as strongly believe that you have to respect another adult's position of "I've made my decision".
Riding a motorcycle is inherently dangerous; you're like 29 times more likely to die on your motorcycle in a crash that you would be driving a car. And that's for all of us; it doesn't exclude people who've taken the safety course. And I'm sure a lot of us have had a concerned family member/friend/nosy busybody who has told us more than once how dangerous it is, how we don't have a right to do it when we have a family, made jokes about donorcycles, etc. And you know what? Those people are right: it is very risky, and we shouldn't be doing it when we might be leaving a family behind. We've all heard the comments at one time or the other over the years, we all know it's a risky behavior, and yet here we all still are, twisting a throttle, because we want to ride bikes, and all the nagging in the world won't change that. It may, however, result in a few tense conversations with kindly Aunt Myrtle that involve the phrase, "Auntie, I love you, but you need to mind your own business".
My Gastroenterologist would strongly disagree with you that ColoGuard is an adequate substitution for a colonoscopy. I know, because I asked her about them before my colonoscopy. Yep, she could be biased, because it's true, they do rake in a ton of cash. And a pharmaceutical rep for a drug company making a drug that competes with colonoscopies could just as easily be biased towards their product, because they stand to make boatloads of cash too if people start buying their products. They're certainly not creating products out of a sense of altruism; they're trying to penetrate a lucrative market. You need look no further into the high pressure tactics of pharmaceutical companies than the current opioid epidemic. They flat out lied and minimized the potential for addiction of drugs like Oxycontin so Doctors would prescribe them willy-nilly for everything from cancer treatment to hangnails, with profit being their major driving force. Same with companies like Theranos. "Use our new amazing diagnostic equipment, one drop of blood and you can do 100 different tests! We're so much better than all those old fashioned tests that the labs are using, they're just trying to empty your wallet! Buy our product!". As it turns out, it was all a huge multi-billion dollar scam, and until it was uncovered, it made Elizabeth Holmes one of the richest women in the world.