Most of the time, the reason why some gamblers feel so emotional is the mindset they have regarding gambling, which makes them expect so much from it.
I think a lot of gamblers would just be bored if gambling platforms didn't give the feeling that you could win something huge that would change your life. It's clear that there is always a risk of losing the deposit in such a case, but some gamblers are too emotional during the gambling game and just don't observe the trivial money management.