Players who get emotional after losing think their money was lost without any value given back to them. Nobody feels great to learn that a chunk of money left their pocket to the ground without realizing. This is how some people feel of gambling, and it gets them really worried and emotionally drained. So, it's best to assume that the money spent in gaming was used to pay for a fun time or moment. Giving oneself the impression that the funds lost had some value attached to it, helps relieve gamblers of the hostility caused by losing money in gambling.
Losing is painful irrespective of the amount the gambler stakes and loses to the system, especially when they don't spend that money for the purpose of having fun, but they spend the money for the purpose of trying to make a profit. The pains hit differently, and some gamblers always try to look for a way that they can regain that money back, which leads them to spending much more money than they could have spent if they followed up gambling only for fun alone.