Quote from 4DTrader:
Many reasons:
1. the way a trader makes his money is also the way he loses it, for example a big gambler loses all on a big bet.
2. market conditions changes, e.g., bull turns bear.
3. lapse of discipline, this stuff erodes with time.
4. neurological disorder.
5. senile, too old to trade,
6. accidental=carelessness=bad luck.
Quote from Bogan7:
Because they are drivers not pilots?

