The Nintendo 3DS is an amazing piece of hardware. Not only does it up the processing power in Nintendo's line of DS hardware, but it also brings with it a new online system, StreetPass, SpotPass, and AR compatibility. Oh, and you might have heard that it does glasses-free 3D as well. There are tons of features in Nintendo's newest little handheld, and its recent price drop to $170 might entice you to pick one up this holiday season. But before you bust out the charge card, there are a few things you should consider. Here are five reasons why you shouldn't pick up a Nintendo 3DS this fall.