I think it is because of the tradition that keep changing. I also agree to you that the young people adopt bitcoin more than the older generation. It is the reason why the bitcoin is still in the early stage. We will see the boom of the bitcoin in the next 5 years.
The young generation is the bearer of change. This is very much related to developing technology, mainly triggered by the internet that has created many digital business opportunities. Adopting bitcoin is certainly a reasonable solution considering that it is very easy to conduct digital transactions, while the older generation does not master that technology. For the next 5 or 10 years, the digital world will increasingly dominate trade where the role of bitcoin as a payment tool is increasingly being used.