I think trading with gambling is 2 different activities, because trading certainly requires the ability and skills in the implementation and in need of accuracy in analyzing market prices, while gambling can be done even without the ability and adequate skills and sometimes hope will be a lucky only.though both are equally risking money to make a profit, but trading has an object in trading while gambling only has money in the bet is not in the trade.
i think if it all involve risk then maybe it can be called a gambling in different way because in trading there ia no always assurance that you can get exactly what you aim. there is what so called an unpredictable result so that situation alone you already gamble.
Since those are your thoughts and how you see trading, I would not really blame you if you consider trading as gambling cause of course, your action is pretty much a gamble. There is more to trading than just making wrong or right assumptions out of nowhere or just from your thought or what you feel like.
It is not tails or head. You have to learn, you have to be able to analyse and you have to be able to make good quality decisions to be able to win more.
All this you cannot find in gambling. Why do you think there is no trading addiction or why do you think good traders are doing successfully while some people keep cursing the day they started gambling. I believe you should be able to answer those questions yourself.