I personally would hesitate to recommend investing in cryptocurrencies to my grandfather, as I would be concerned about the potential risks involved. He is getting up there in years, and he might not have the time or the stomach to weather the ups and downs of the crypto market. If he wants to invest his money, there are plenty of more traditional options that might be better suited to his goals and his comfort level.
I think your faith in the Bitcoin market isn't enough that you can recommend it to your grandfather. Anyway, we have different kind on how we see things so if you think that Bitcoin is not an advisable investment for older person then I think that is good enough reason to hesitate.
Actually, I have a lot of faith in Bitcoin and everything it represents. But, when it comes to the Bitcoin market, it is not always a smooth ride. Like any other market, it can be affected by factors like regulatory changes and global economic trends. So, I think it is important to be careful and consider all the angles before diving in, especially for older folks who might be more cautious about risks and looking for more stable options. Ultimately, everyone has to make their own decision on whether or not to invest in Bitcoin or any other asset, based on their own research. That is why I said that I would hesitate to recommend investing in cryptocurrencies, like Bitcoin, to my grandfather. As much as I believe in the potential of Bitcoin, it is important to be realistic about the risks involved.