If you want your laptop to play games, go Windows. Still not much representation of games on OS X.
If you want to have parity with clients and coworkers, cool, get a Mac -- but do not buy an Air if you want performance. They're light and sexy. That's all. The MacBook Pro have the Retina display, which is fuckawesome sexy.
Linux nerds: stop this japery. At the very least, users can enjoy using their Mac without installation, package, and maintenance bullshit. If you want your machine to work without drama, buy a Mac.
Pardon, but I'd just like to interject for a short while. What you're referring to as Linux, is in fact, GNU/Linux. Linux is not an operating system unto itself, but rather another free component of a fully working GNU system made useful by the GNU corelibs, shell utilities and vital system components comprising a full OS as defined by POSIX.
Many computer users run a modified version of the GNU system every day, without realizing it. Through a peculiar turn of events, the version of GNU which is widely used today is often called Linux, and many of its users are not aware that it is basically the GNU system, developed by GNU.
There really is a Linux, and these people are using it, but it is just a part of the system they use. Linux is the kernel: the program in the system that allocates the machine's resources to the other programs that you run. The kernel is an essential part of an operating system, but useless by itself; it can only function in the context of a complete operating system. Linux is normally used in combination with the GNU operating system: the whole system is basically GNU with Linux added, or GNU/Linux. All the so-called Linux distributions are really distributions of GNU/Linux.