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Let me take trading as an example. Someone learn, trade and lose. Learn the more, trade and lose the more. Months after months become years and the trader continue to lose. Then if such person stop, there should not be anything like learning again and restart, he should just quit and focus on less risky means of earning. I understood you though and you are not wrong but there are sometimes that you just have to quit.
This is a common mistake made by traders; they don't know when to stop trading and hope for the best; but, there comes a moment where you just have to give up; what brought Bob success may bring Alice disaster. I began trading in 2016 and soon realized I was becoming a liability to myself because I was not progressing at all, so I had to stop completely, no amount of motivation would bring me back. I always know when to halt.
It's fine not to invest in cryptocurrencies, but it's wrong not to have cryptocurrency in this day and age. Investing in crypto is similar to gambling in that there are only two possible outcomes: it can make you rich or it can wreck your life.
It is like gambling if investing in altcoins which can become shitcoins or dead, it is not gambling if holding bitcoin.
You are right but that chances of making 100x is only possible with altcoins in a short period of time but then again the risk is way too high.