The Games Have a Worse Plot
The first and stupidest complaint that gamers have about the movies is that they don't follow the plot of the games. Of course they don't! The movies aren't nine hours long, and even if they were, eight hours of watching people slowly fetch pointless objects while avoiding shambling bodies isn't cinema, it's a shift at Walmart. The plot of the first Resident Evil game kicks off with the only special forces team in the entire world that doesn't know how to break down locked doors. From there, the stories only got dumber. Gordon Freeman could complete the entire series in about half an hour.
Hollywood, we're mentioning Half-Life in an article about video game movies for a reason. Take the hint AND OUR MONEY.