IMO, trading has more emotional stress than gambling. Perhaps being in the industry for long will take away the fun in it while it doesn't in gambling. The entertainment stays especially in sports betting.
I think it would be useful to expand a little bit on this. Why does trading produce considerably more emotional stress than gambling?
I would say that is because there is much more decision on the part of the player/trader. In gambling you place your money and you get an outcome almost instantly. In trading you can leave your position running for seconds, minutes, hours, days, weeks, etc. You are the one who makes the calls - where to take profit, where to cut the loss, when to add to the position and when to hedge. This is on top of the analysis that (I hope) precedes your trade decision.