Earlier quoted context omitted.
I see you didnt reciprocate the courtesy of not making an argument from personal incredulity. These things are complex af. When the people who optimize supply chains all day every day tell me that speculation market is more of an hindrance than help, I'm not going to take your random argument to be worth anything.
All your arguments are anecdote and opinion.
Of course it is "speculating" trying to estimate fuel prices, but this is not meant, when people condemn "gambling" on the stock market. What they mean is people with lots money investing wherever short term profits are possible and often gaming the market while doing so. So creating unexpected price changes for the actual industries needing those supplies and they obviously don't like that. But I couldn't draw a clear line between "necessary gambling" and "unnecessary gambling".