It depends on the person actually. If you are the type of person who is patient and good at predictions to your investments then trading is best for you and if you are a person who is pretty good at gambling might as well go with that.
Its also a factor on how the person is dealing with trading. I'm into trading and also in gambling but I don't want to compare both of them, I'm good for saying these two are very effective to me. When I'm serious about my trades I'm making decent amount and if I want to have some fun, I do gamble.
Yeaaa you might can go for both if you feel comfortable with that, why not?
You will feel the real difference between making money through gambling and trading , and the winner is trading.
Especially when you are skillful , it is feel so easy and legit to get profit from trading.
Having both is better, you gamble and you trade at the same time. But don't gamble and trade when you have an anxious feeling because it will affect both of it. In gambling, you might lose all the bankroll you have and in trading you might sell all of your coins on your stash.