Mostly the government will not be against Bitcoin at that time and no such blames would be given to btc and coming generations will use BTC as mainstream mode of payment in their daily life and we might be able to witness that time.Buy yes they must be aware about the upcoming scenario as technology is growing at such a fast pace and they need to have this knowledge but remember not to burden them with any kind of forced study of these books.But yes you can tell them exciting stories and in unique way teach them the importance of Bitcoin at present and upcoming time.The best way is to invest for them and gift them a wallet holding btc when they are grown up and then they know how to use it.