Bitcoin is not backed by any physical asset like Gold nor by any fiat currency. It makes me wonder if I should invest/trade in Bitcoin or not?
The USD is backed by what? By the economic power? If that is true, there must be a massive issue looking at the charts

Have you ever been in the art "industry"? It is backed by what? I saw people buying a extremely ugly childish painting for USD 2.3 Mio....
Gold is backed by what?
It's all about what people are willing to pay for, that's the whole magic.