Basically, the same drivers and motivators of human greed in the world. More and more without any real purpose or limit.
Dopamine, essentially.
Yeah, that's why video games are a wonderful escapism.
Tbh, I was hoping for a more sophisticated rationale behind playing MMORPGs, but thank you the answer, regardless. I play video games for a lot of reasons - escapism being one of them - but I usually have very specific reasons why I choose to play specific games or play games of certain genres.
My reasons for playing the Mass Effect series, for example, are nothing close to the reasons why I play Rainbow Six Siege. They're both essentially leisure activities and coping to pass the time and relax, but beyond the surface level it's more complex.