OP, your communication style is quite interesting, but your posts suggest that you are already quite informed about the value of Bitcoin, its volatility, and all the pros and cons. Why is there any doubt about investing a certain amount and being an eyewitness, a practitioner, and not an observer? I think it's nice to be on the same page with those who believe in Bitcoin and one day get some increase in their wallet, rather than remain in doubt and regret the missed time.
Yes, there are incidents when people lose, but mostly this happens due to inattention. If you are aiming for a long-term period and know all the aspects of storage, you should not be afraid; on the contrary, you should keep up with the times.
I see no matter how we try to encourage people, in the end they will always stick to their own mindset. So the best option here is to wait for them when until they’re ready to invest. Because once they decide to invest, that means they have known already their investment well, and they have understood the risks already that comes along with their investment. And when the that time comes, at least they know for sure that bitcoin investment is not all about profits but losses as well, that’s why investing with caution is a must.
And once they start to experience losses consistently, they should know that there’s no one to blame for that but only their selves. Investing has no fixed outcome, so learn to invest at your own risk.