Conclusion: Trading is not the same thing as gambling, but if you want to handle trading as gambling, it's just your choice.
You are right, I completely agree with you, every thing you have said about trading In the parts of your comment that I chopped out due to length are all correct, trading can never be the same as gambling because just as you have said, in trading, traders have several types of tools available for them to use in predicting the market better, so this I would say is more on the professional side of things, than simply being seeing as a game of luck like it is with gambling.
But then again, I do not think it's a choice to treat trading as gambling, trading can in itself be the same as gambling when the trader lack the knowledge required to guarantee some good level of profit from trading.
Trading without knowledge of how to be profitable is equal to gambling, it's a fact that not a choice people have to make.