It seems clear, doesn’t it? The purpose of trading is to make money. The trade is planned, entered, and exited with the goal of increasing the size of one’s trading account. What other purpose would there be?
The dictionary says this about purpose:
“something set up as an object or end to be attained : intention b: resolution, determination”
What about:
The purpose of trading is to not lose money.
The purpose of trading is to practice discipline.
The purpose of trading is to use my talents.
The purpose of trading is to grow.
Or how about:
The purpose of trading is to express my true nature. I was meant to be a trader.
Maybe the purpose of trading is simply to trade. Because that is what you have been called to do, or what you are meant to do, or it’s the highest expression of your nature as a producer rather than a consumer. When you trade successfully, you are disciplined, you are growing, you are using and developing your talents, you are making money, and you are creating wealth from scratch. But most of all, you are trading because it’s the right thing to do for you.