Trading is actually a dangerous profession. Trading is like gambling. In a moment, someone becomes rich and someone becomes poor.
No, trading isn't a dangerous profession. Don't see it that way. The only way someone could become rich today from trading and then poor tomorrow from it is if they became over confident from their winning and then jettison their trading strategy and plan. The market has a way of disciplining traders like that. It doesn't like traders getting over confident. Every trader should learn how to stay down and humble while winning. It helps take off pressure and impatience from them.
Trading can be dangerous if he enters the world of trading without basic knowledge and without a strategy, then trading can be dangerous and even needs to be avoided because he is actually gambling not trading. So there is nothing wrong with saying that trading is a dangerous profession, only for those who trade without a strategy and basic knowledge.
That is why OP made a thread like the title of this thread, is trading suitable for everyone? Of course the answer is no, although basically trading is open and accessible to everyone, it still needs to be underlined that without knowledge and without studying trading properly, trading is not suitable for them. Trading is a complicated activity and full of risks so that to start it requires knowledge and strategy.