In a way it is like trying to convince your 70 year old mother to drop her land line and use a smart phone. It's the new thing mom you can take all your communications with you where ever you go. Mail phone instant message video music and .....yer bank.
She might hate it now but when she gets the first pictures of her great grand children on it.....OH JOY!
Excellent point, I convinced my 87-year-old dad! He said I just don't understand it (bitcoin), but hey it might be the future so tell me more. Some people are open and embrace change, most resist because of fear of the unknown.