You are right. I have never been to a casino. The reason is simple. I am a mathematician.
What all mathematicians noticed is that there is currently no kind of possible prediction even for stocks while idiots declared cryptocurrencies with 25 percent oscillation stable.
If that is not gambling I don't know what is it.
The conclusion is only one; cryptocurrencies are for people who know shit about valuation, economy and are thrilling to earn money - without work.