and do not mind those who says that trading is hobby, is just like saying they love losing money because we can also refer trading as gambling and you know what gambling is. You can easily lose what you use in gambling or trading, therefore whatever amount you are using for trading should be equivalent to what you can afford to lose.
I agree that a trader should use the amount of money that he can afford to lose to trade but I do not agree that we can refer trading as gambling. Trading and gambling are completely different but their risks are similar because most traders do not know how to trade but have greed and doing trading like gambling.
Yes, If fund is small amount in trading, lose also will be low, beginners should start trading or gambling with small capital, it's less risk. Also expert traders also use affordable amount in trading. Mostly beginners bought wrong coins with big amount of fund even at high price. Trading and gambling risk is almost same but both of different.