These Peripheral Devices Are So Stupid

The reason people play video games is to simulate real life. Now, this means that they want some degree of attachment away from reality. Obviously if you had to actually, you know, learn how to operate a controller that simulated a real gun perfectly just to play Doom, we wouldn't have one of the best selling games ever. That's why for console games, whose goal is to entertain you while you're lying on a couch in front of a TV, ease of use of controllers is important.
Well, apparently some new developers aren't getting that message. While bad game input devices have littered history (Power Glove, anyone?), some newer developers (and some older ones who've been in this business for a long time) still haven't learned their lesson yet: too many of the peripheral devices released have too limited purposes.
An example of a relatively useful peripheral would be the DDR pad. Yes, it only works for one type of game, but it works for the entire genre. A bad example that's coming out soon, however, are the different instruments for Rock Band. Guitar Hero's use of a guitar peripheral makes sense because the guitar could simulate a bass as well, but having drums, guitars, and microphones all bundled with one game is going to be extremely expensive, not to mention as burdensome as the Steel Battalion add-on.
Worse still are Nintendo with their Wii add-ons. Do we really need a case so that the wiimote looks like a gun? Link's sword? These aren't items that help game play in any way, and all they do is make your product look like a cheap gimmick.
So lay off all of these peripheral devices. They're only hurting your product, and they're damaging the essence of video games.