Here are the reasons why;
1. It is quite stressful - old traders will soon give up due to mental health problems
Seriously trading is not really a easy activity, it’s kind of stressful, and it requires critical thinking, which is having negative effects on our mental health, some old traders might not give up on trading completely, but they might not be trading often, they won’t really be desperate to make money from trading, most of them will be trading whenever they feel like.
2. It is not enjoyable anymore - nobody will stay long in a job that they no longer find themselves comfortable with especially if you are not earning well.
Do you think traders are not earning well? Then maybe the person doesn’t know much about trading yet. I disagree with you that traders are not earning much from trading, I know their is a great risk in trading, and you are definitely going to lose money, but if you really know how to trade, then you will also make profit.
3. Trust issue due to Scam growth - traders never find it safe to use exchanges, even big exchanges.
As long as you are not leaving coin on exchange for a long period of time, then you shouldn’t have problem with exchange. Leave any amount you will be trading with their, and whenever you are going on a break, then withdraw all your money from the exchange, if things goes wrong with the exchange, then your money is not on the exchange.