The first thing is to understand what the risk is.
The risk that Amazon will drop more than 80% in less then a year is close to zero. For the bitcoin that risk was real as it happened. If you cannot make a realistic estimation of the real risk you are surely not able to manage that risk, as you don't even understand/know the risk.
I don't know anybody who got struck by lightning and died, but I know quite a few people who lost money in bitcoins. So there the risk of an event happening is completely different too.
I choose not to invest in bitcoins but to (continue, as I was trading before the bitcoin was created) trade futures. I am sure that my profits are far beyond the average profit that "average joe" made with his bitcoins.
If bitcoin is considered as a currency then it will be one of the weak currencies as it lost in less than one year 80% of it value. It belongs in the category of:
- Iran rials
- Vietnam dongs
- Sao tome dobra
- Indonesia rupiah
- Belarus roubles
- Laos kips
- Guinea frans
- Zambian kwacha
- ...
https://www.therichest.com/rich-list/poorest-list/the-worlds-15-most-worthless-currencies/