I dont think we need even more reasons when the most basic of the reasons is already there, we can profit from it, whether you want to hold short term or you are in for the long term holding gold, silver and bitcoin is a good choice, hold the one you like the most but hold some and you will be fine.
I agree with you - keep for a long time - this is a very good idea. But there is always the temptation to spend part of the savings. In addition, it is always necessary to monitor what is happening in the world.