You either are a 50/50 crapshooter or a professional.
If the question is "Do you think trading is gambling?", I assume that the OP is asking, "Do you think trading is a 50/50 crapshoot?"
A successful trader is a professional one, a successful gambler is a professional one.
"Gambling", in my opinion defines the activity that the majority of people who shoot craps, play slots and roullette, and who suck at Blackjack engage in. The gambling fools!
I think the big misconception that most people have about trading being legal gambling is that they assume that every trade that is placed is a 50/50 coin toss and nothing more; a random and blind pull at the slots.
IMO learning to trade is learning NOT to put on a trade that seemingly could "go 50/50 either way". With experience comes the ability to recognize probability, at which point you can do a coin toss or wait for your best setup and have your loss prevention in place so that if your 80% to 90% probabilty errs on the side of rare loss, you're taken out with minimal loss.
If we're in this to be likened to professional gamblers, I guess that's okay as long as we emphasize the word PROFESSIONAL.
Really who cares what anyone says as long as you're happy, are out of the rat race and have enabled yourself the kind of freedom and flexibility that only a trader can have!