this word must not only for Millennial because there are too many middle ages and older people that has no investment in crypto,so better that all the people in the world should invest even small amount in Bitcoin before the adoption totally happens.
There are many who are not even interested in investing in a speculative market and the skeptics are much higher than investors as majority of the investors are from the tech background or knows very well that the bitcoin market could give them a good profit.
but i love the idea that my son and daughter will need to invest now for their own future.
Investing is always a good idea but do not put everything in bitcoin as you never know what will happen in the next ten years.