Why would I choose between the two of them if I can do them both,
The thing is that what is more comfortable to you and giving you more profit.
First of Gambling is just a game of luck while in trading you have to analyze before putting your money,
There are gambling games that are not just luck base but also applying analysis such as sports betting.
So if you are feeling lucky and want to try it just go to some gambling site,
Exactly as this is what I feel when I gamble and just dice it out.
And if you want to try your skill's do some trading.
Don't just try it but go for it as long as you know what you are doing and trading you'll be fine.