See, most of the game is dark. And yet, you have a flashlight! But, you can't use the flashlight at the same time as a weapon.
And none of the weapons have lights.
And there's no duct tape in the game.
This is fine as a gameplay mechanic except that it's REALLY UNREALISTIC. What, you're saying I can't grab a helmet off one of these zombies (you know, the ones with helmets) and duct-tape a flashlight to it? This isn't hard, folks.
In fact, who says I have the only flashlight in the game? Let's duct-tape flashlights pointing EVERY direction!
I know that's what I'd do if I could. :P