I didn't vote, because really it depends a lot on what you want to do with it.
When I graduated from high school my family all pitched in and bought me an Alienware M9750 gaming laptop since the university I was going to be attending was far away from home. The idea was that with a gaming laptop I'd be able to take it home with me on school vacations. For that purpose, I'll admit, it was goddamn awesome. Even while at school it still had its benefits. For one, it was a hell of a lot easier to pack when lugging all my crap to and from school every year. I also really liked having it because it meant my roommate (who also had an Alienware M9750) and I could attend our guild's raid night while still hanging out in the residence hall lounge with our friends instead of being anti-social in our rooms.
That's not to say there weren't downsides. For one thing, those Alienware laptops put off A LOT of heat. You've gotta be ridiculously careful not to block the vents, and having a cooling mat of some sort is a definite plus (which can admittedly be kind of expensive, but if you've got the money to afford an Alienware, it's probably not outside your monetary reach and most definitely a smart investment). They're also more difficult (and more expensive) to keep current with new parts, so they get pretty rapidly outdated, which isn't too good for a system that costs as much as an Alienware.
When I graduated and returned home, the first thing I started saving up my money for was a custom-built gaming desktop. I ended up with a system exponentially more powerful than that Alienware M9750, and it was roughly $1500 cheaper (and that *is* including peripherals like keyboard, mouse, headset, and monitor). I've had that desktop for about a year and a half now and I'm still running brand new games at maximum settings, which is something I couldn't say about my Alienware M9750 laptop after the same period of time.
So in the end, the Alienware laptop was great for travel and portability, but completely outclassed by my desktop in just about every single other way. Take that for what you will.