The Black Friday experts already have won the game: While you may think you will get one of the limited number of goods available by getting up early, chances are that you won't. There are enough "professional" Black Friday shoppers that the best deals will almost always go to them. Unless you are dedicated to making Black Friday shopping into a sort of job, you will almost always get second pickings.
You'll buy things you never intended to buy: Once you've waited hours in the dark, cold morning to get into the store to find that the deal you wanted is no longer there, you aren't going to want to leave empty-handed. This is exactly what the stores are counting on. Instead of leaving, you'll walk around the store looking for other things that you may want and end up with a bag or two filled with stuff.
You'll forget to calculate the true cost: There are more costs to a product than the price tag, and Black Friday is a perfect example. Your time is valuable and, in order to get the best deals, you'll have to spend hours in the morning cold before the store opens if you hope to get them. You need to calculate whether the extra time is worth the discount offered. Often, it isn't.
That price might not be that great: Just as grocery stores sometimes place items on the aisles with big bargain banners all around to make you believe the product is being sold at a great price, the fact is that often it isn't. Grocery stores know that most people will assume it's a good price and not do further research. Retail stores have realized that many consumers react the same way to Black Friday sales.
