Because between us and they have gap about generation 
In fact, older people always have a lot of worries and I do not think they are interested in investing in Crypto because they are afraid because Crypto is so new and it's like a virtual thing, they can not see it and can not handle it. In addition, Bitcoin have a huge risk and it is not valued by any model and fears that this is a psychological game.
I have met many old people and I told them about Bitcoin, as a result I was scolded for daring to believe what the internet said, oh my gods @@
In fact, older people always have a lot of worries and I do not think they are interested in investing in Crypto because they are afraid because Crypto is so new and it's like a virtual thing, they can not see it and can not handle it. In addition, Bitcoin have a huge risk and it is not valued by any model and fears that this is a psychological game.
I have met many old people and I told them about Bitcoin, as a result I was scolded for daring to believe what the internet said, oh my gods @@
There are many factors that tends to older people choose gold and silver as an investment, one of this is generation gap because of this gap they didn't know what is the importance of cryptocurrency. For them precious metals are more valuable than crypto because gold and silver have their own stable value compared to bitcoin. So that they didn't appreciate the value od all cryptocurrency at this generation.