But Bitcoin does have a purpose: transfer. The most common type of transfer is international: either to avoid fees, capital controls or economic sanctions. Without that demand, there would be no multi-billion dollar monetary base, and Bitcoin would be just a speculative bubble that died a long time ago.
I would say that trading financial assets (including cryptocurrencies) is a process of buying and selling risk.
The "bears" are selling risk and the "bulls" are buying it.But risk=profit.
You are right about main purpose of crypto.People want a safe,irreversible and anonymous way to transfer value online.