Trading is maybe very unpredictable but its also very profitable so I think its still worth trying it out and you will see that its risky but profitable.
I assume you're talking purely about Bitcoin right now, so yes, everyone has to start somewhere, but the main point of importance is that you don't keep pushing yourself when you're simply not in for it. If you realize that trading isn't the right thing for you, then it takes courage to admit that and to skip trading entirely. However,
some people constantly force themselves to become better in trading while they keep making the same rookie mistakes. And in some cases it's year after year, after year. But hey, without these people screwing up with trading, smart traders wouldn't be making that much profits.
It is bordering on insanity, i.e. doing the same thing all over again and expecting a different result. Though I still can't agree with you, at least, not in respect to your claim that trading might not be the right thing for an individual. Indeed, if you are rich and wealthy already, you may not be particularly interested in becoming more wealthy or not through trading specifically. But these people are obviously irrelevant since we are talking about those who are trying trading in the pursuit of profits. Therefore, it is not trading itself which is not the right thing, it is a wrong approach to trading which is to blame here. It is the same with women if you are a man (a normal man I mean)...
If they constantly reject you it doesn't in the least mean that they are not the right thing for you