Okay, let's put it this way. If you play it and like it, and it turns out to just be a short fad as you think, then you cash in on the fad. If it turns out to have real staying power (and gee, it's not like there have been any MOBAs which have been played for the better part of a decade or anything), as I think, then you got in early. If neither happens, then you had fun with a game. So what's the down side?