from experience, borrowing money to trade puts you under pressure that is enough to push you into losses. regardless of how certain you feel the trade can go, if the amount you are using is not something you can afford to lose, it is not advisable to make that kind of gamble on it. if getting profit from trades was easily like that, people would have been cashing out really big from trading. getting a loan for trading is just like taking a lone to gamble, the risk out pass the potential gain.
Future trade is nothing better than gambling. I consider it as gambling already. But if someone has good knowledge and experience, they can make profits while sometimes knowledge and experience do not help in gambling. I am not eliminating the fact that knowledge is important in gambling, but when people gamble in certain things like slots, you only rely on your luck while sports betting and poker are kind of different.
I agree with your entire post about your point of view regarding taking loan to trade. There is another thread about trading under pressure. People should know about this as well.