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 @@
yes, their reason is clear, first parents certainly don't understand crypto and surely they don't want to occupy something they don't understand, the second factor is because they always want to be able to see their money not to disappear. .. it's normal ... crypto is for the next generation of young generation, not for people who are old because the way parents think tends to be monotonous in contrast to the current generation who really like something new and like challenges. 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 @@
investment in their era. while crypto is not suitable for them because they will not understand about this technology