I had a friend like that, he made insane amount of money from trading, zero emotions at all when dealing with millions of dollars that can be gone in a second, apparently that helps.
Trading is not easy and a bigger capital you are using for trading, a more pressure you have as well as bigger effects from emotion you have to cope with. It's not easy to repeat success from trading with small capital to trading with like x10 or x100 to x1000 that small capital.
When you are trading with very big capital, you don't chase for x2, x10 or x100 from it, you only need small percent of profit which is enough. You will prioritize safety and only open positions if you see good chance to get profit but it still has pressure. Big capital, big risk to lose big when you fail.
Fun is enjoyment too and that's an emotion. Same with trading and gambling, it doesn't matter you are doing, if you want to trade with zero emotions that's fine but if you want to gamble then you should feel some fun. Without fun, there is no reason to gamble, and fun is an emotion so you need to be feeling at least something about it.
This isn't some mathematical question we are trying to solve, there is nothing wrong with making it look like you are telling something that hurts people, if people are hurt by this then so be it, if you are not having fun then do not gamble. You will most likely end up losing your money anyway, so there is no reason to take any risks at all. I suppose entertainment is the only thing that casinos provide.