I see 2 main reasons why older people prefer investing in gold and silver to other forms of investment more especially cryptocurrency investment. One is the conservative nature of the older generation who are most times overwhelmed by the fast pace of innovation and could hardly catch up with the new ideas and systems. So, they are more comfortable sticking to what they know and understand better. The other factor is what I term technology gap.  Investing in precious metals is quite conventional and straight-forward, investing in cryptocurrency is on the other hand technical  in both the skill and tools of investment. Most elderly people (especially in the developing world) can hardly comprehend the workings of the computer or the blockchain and may not have what it tbkes to invest in securities or crypto.