The other only reason what I can think of is they are gambling for fun. Certified gamblers will gamble for fun and even it will take a lot of time before they win, still they love gambling and they have passion for it. But a very popular reason that people just gamble out for profit and very rare real people that says and just gamble for fun.
Whatever the reason you gambling, is wrong? You sure what you saying? You are even endorsing a gambling website and you say that whatever reason you gamble is reason? Face the consequences when you gamble, worth it or not you have to know the consequences before you gamble.