Some people love using laptops but also like playing games. Most know that playing games on standard laptops doesn't always give that great of performance. Because of this you might have the temptation to go buy a gaming laptop. While it sounds nice to have a laptop that could play high end games on it, you really should consider the disadvantages of these first.
These machines cost some serious money. They aren't cheap at all. You could purchase a gaming desktop and a very good laptop for the same price as just one gaming laptop. You are really cutting out many options by investing this kind of money in hardware like this.
The weight of it is a huge problem. While you might think it's portable because it's a laptop, it really isn't that portable. It will be too heavy to carry around all day. Additionally, you will need a gaming mouse to go along with it which adds to the weight and makes it more complicated.
The battery life of these machines are fairly worthless since it's running high power hardware. You will be stuck near a plug if you want to do anything more than an hour of gaming. This really defeats the purpose of using a laptop. Most people purchase laptops so that they can be portable.
There is a huge risk with these laptops. The parts on them tend to go bad quickly. You will have to service the whole computer versus repairing a part or two yourself like on a desktop. This will also up the cost of owning this type of computer over the long haul.
You can't upgrade that easily. As a gamer you know it's best to have frequent upgrades. A gaming laptop will become old much faster than a desktop that you can upgrade. Most gaming computer laptops have most of the upgrades already installed when you purchase if you are serious about gaming. This limits future upgrades which would require you to purchase a new model in order to upgrade.
Heat will make it uncomfortable to use and eventually kill your hardware. There is a limited life span with these devices compared to a desktop that can deal with heat better while playing games.
A gaming laptop is something that many want to buy. Find out the disadvantages to this and why you might avoid buying a computer like this. Ask you friends if they think it would be a good investment before you go out and purchase one of these gaming laptops.