I think that the best way one can convince someone on investing in bitcoin is when you live by example,i.e when you have invested into bitcoin and you also have what to show for it.
That's absolutely correct, and I agree with you 100% on this very statement of yours, because truly, taking myself as an example, I'm one of those who never believed in Bitcoin 5yrs ago, as I always thought it was another scam due to past online scamming experience I had which made me lose my college school fees and other funds, which I told myself never to trust any online investment ever again. But when I saw my friend living a financially buoyant life of Bitcoin, I got interested and gave it a try, which I must confess, was the best decision I ever made.