Anytime that this conversation comes up , I will.always say, let kids be kids. We should think that they would miss anything by not learning about Bitcoin at a young age. There is more to their life and development than Bitcoin. Therefore I would not agree to anyone forcing Bitcoin knowledge upon them when they should be taking, music lessons, dance classes, football classes. The only Exception is if the kid show repeated interest in knowing about Bitcoin.
Children of the future will be born in a time when they will see all the modern things in the whole world and Bitcoin will not be a surprise to them. At some point Bitcoin will become such an acceptable currency for people that they will invest in Bitcoin instead of keeping money in the bank. But because of the risky nature of Bitcoin, people are afraid to invest in Bitcoin, but if you invest for a long term, it is definitely possible to get a lot of profit along with the risk.
If your children are curious, you should tell them about Bitcoin when they ask you about it. It is not right to dictate such issues to children before they reach a certain age. You should save and invest for your children, they don't need to do this, you do it for your children. When the time comes, you should tell your children that you are investing for them and leave the decision to your children.
The world is always changing and we try to keep up with this change. The new generation can learn many things from social media and the internet. It is best to guide children in the direction of their curiosity.