i also think this way . usb's were already handy and perfect to store some data's including our private keys but there are still other device that can carry our private keys . though i believe that investors wont stop to invent portable stuff's and they could invent something that is smaller than a usb and micro sd's but still there would be adapter available so that we can still use our old devices . kudos to the man that do those said task . hope he update us here in the near future .
It is good that we are trying to gift the satoshi for the next generation because we all know that the price of the bitcoin just like nothing but by the time goes by the amount of the coin increasing rapidly and becomes profitable like now. It is not impossible may happen again and to make sure the future of the next generation that we will pass the satoshi to them. We cannot tell what is happening on the market, or it will continuously give a profitable income until the next generations. But still, if the people consistently support the cryptocurrency, it will last long forever.