When you have got other sources of income then you can trade for emotional satisfaction. But, I am trading for money, as I don't have other sources of income. At this young age, I need a lot of money to support my family. So, If I can some, It would be good for my family.
in the world of commerce, everything is uncertain, so you don't only have one source of income, if we have money, it would be better for us to invest in other fields, without leaving the main business, because by having more than one business you will feel safe, without fear, if one of our businesses falls, another business will support it. Indeed, revenue in bitcoin is very promising, but for security, we must be vigilant.