Indeed. It is a good way to save money for our kids simply because once you have a lot of bitcoin kid future will be have bright future. But, if you save money with bitcoin you should store it in a safe place. You should also tell to your kids about it so that they can really use it in the near future.
But how can you be so sure that bitcoin wont leave us ? What if the price of bitcoin continues to decline ? Do you know you actually consider these consequences ?
Anyway , i might be wrong and you might be correct of your predictions and decisions . just follow your heart and do what you think that is good for you because at the end of the day , that is still your life and that is still your money not ours .
In my case i will prefer banks over bitcoins because banks are already guaranteed that can last a lifetime especially if im planning about my future and my families future .