The essence of people's propensity to look for shortcuts and frequently overlook the wealth of useful information that is readily available is captured in your comment. Many people chase after short-lived advantages at the expense of significant, well-researched discoveries that could completely change their strategy.
The disparity in thankfulness is both perplexing and extremely worrisome. It says volumes about people's tendency to point fingers rather than accept sincere help, as you have observed. It seems as though there is a natural aversion to reflection and the idea that one's own actions could be the cause of one's problems. This broader behavioral pattern is microscopically represented in the world of online casinos. Even though there are many and difficult to spot traps, gamblers' self-imposed blindness makes matters worse.
Most people do not think long term and only care about the short term, that is simply the way they are wired and they will never change, there is substantial evidence that long term thinking is superior to short term thinking when it comes to the outcomes we can get, but has this knowledge inspired a change in a lot of people in order to improve their lives? Not really since they do not care, and since this is the case then it is not surprising to still see many people sacrificing their future just to enjoy the present a little bit.