Trading is a good way to lose, especially for people that have just started. For some people that continues to trade, some among them continue to lose. Trading is not a means to make incomes, expect you follow the somethings. Things like:
Not using more than what you can afford to lose. Unless you have tested your strategy for months and not failing.
Using amount lower than what you can afford to lose to start
Be disciplined
Trading not taking your time and becoming problem for your health.
Trading is easy to talk about, but to win consecutive is another thing which only very few traders are good at. Most traders are losing. Just accept that, because it is the truth.
I think your statement regarding trading is a little too bold. Indeed, trading can lead to capital loss, which is expected with any kind of investment or trading strategy. However, trading also provides great opportunities that can yield unrealistic results, depending on your trading style, in a few days, or you can go the safer route of choosing more trusted and established coins. As you've also briefly mentioned, it's certainly not suited for everyone. Personally, I'm way too anxious and can't stand the whole scenario; thus, I decided to stop after a while. Truth be told, I made a decent sum of money in a relatively short period of time.
From my point of view, I believe that it's an experience that everyone should try at least once or twice and judge for themselves if it's worth it.
