I liek Macs :)
Anyway, I'm too lazy to type up my own reasons, so here are a few reliable reasons from the Apple website:
1. It just works.
How much time have you spent troubleshooting your PC? Imagine a computer designed by people who hate to waste time as much as you do. Where all the hardware and software just works, and works well together. Get a Mac and get your life back.
2. Everything-ready.
The Mac is the only computer in the world that can run all the major operating systems, including Mac OS X, Windows XP, and Vista. With software like Parallels Desktop or VMware Fusion you can even run them side by side.
3. 114,000 viruses? Not on a Mac.
Mac OS X was designed for high security, so it isn’t plagued by constant attacks from viruses and malware like PCs. Likewise, it isn’t plagued by never-ending security dialog boxes like those in Vista. So you can safely go about your work — or play — without interruption.
4. No hunting for drivers.
Just about everything works with Mac — even the stuff you used with your old PC. All you have to do is plug it in. A Mac has USB drivers for printers, external drives, digital cameras, input devices, iPod, and more. It can see Bluetooth cell phones and headsets, as well as FireWire cameras. No rebooting, no hassles
5. Design that turns heads.
You won’t want to hide your Mac in a corner of the den. You’ll want it front and center in your life. The Apple style shows in every detail, from its sculpted surfaces to its gorgeous Mac OS X graphics