Funny how all the people her talk about how their children will become rich if you teach them about bitcoin. Bitcoin is a currency, do you know what a currency is? A currency is something that is used as an exchange medium for goods and services, nothing more. If you plan to buy bitcoin just for the value increase that may happen in the next years you are simply a gambler because nobody knows what will happen.
So teach your kids about bitcoin so they can use it to be free of state surveillance and can have a decentralized way to store their wealt. But please don’t teach them about bitcoin so they will rich.
I have nothing to argue with you when you say bitcoin is a currency because that's what Satoshi created bitcoin for, but there's also nothing wrong or funny about people treating it like an investment. Everyone has different purposes, and how they want to use it is up to them. Like gold, there are users to store assets, there are users to make jewelry… no one is wrong.
And whether bitcoin is a currency or an investment, bitcoin should not be taught to children who are too young, they are beyond their abilities and minds. Teaching bitcoin to children is certainly a good idea, but it should be age appropriate.