What irritates me the most about these movies is that the first one was actually pretty good for your standard action flick and didn't try to shove a ton of shit on the screen all at once like the sequels. It used the same concept as RE1, but used none of the original cast members, with only a few nods to the game (other than monsters, of course). Then, they started to try and blend shit, so sure, it's less boring in that we're not getting a shot-for-shot remake of something we're already familiar with.
But... is what they do really better? Since Resident Evil Apocalypse, the movies have literally been ripping scenes and characters straight from the games and shoe-horning them into the story as if to say "Hey, kids! It's Leon S. Kennedy! Remember how much you love him? Welp, here's a movie about a Mary Sue. But Leon's in it, promise." Why even have them there? Who's that for? Fans? Wouldn't most of them just be annoyed by the misappropriation?
Sure, it's not a complete recreation of the games, but the result is actually worse than if they had. They tried to blend their original take on the Resident Evil concept and established characters and situations from the games, but with their protagonist at the helm, and the end result is characters from the games being devalued into nothing more than supporting cast members that the film writers couldn't be bothered to come up with new names and costume concepts for. The cast of the Resident Evil series is appropriated into these movies about as well as Nintendo characters were appropriated into Captain N. Hell, sometimes I completely forgot that Jill was even in Resident Evil Apocalypse until she would show up again and I would ponder why the hell she wasn't doing anything.