Something that Mike Maloney also says is that he sees (and I also do) a big problem with crypto currencies which is that they have a single point of failure, Internet. Under certain critical events Internet could go down in which case all the cryptocoins will be unavailble. True, it is an extreme case and we will have many other issues like getting food and may be even weapons, but it could take even years to be back and have access again to our crypto currencies. If that happens we need to have other aways to purchase food, water, etc like gold, silver and FIAT currency if it still has any value.

You know the saying: don't put all your eggs in the same basket