In Short

The Mac keeps growing, even over period of steady PC decline, the Mac is getting bigger and better than ever. If you're not using a Mac, there's a lot of great reasons to consider switching. The hardware is the best in the industry. It's the only way to get OS X, which many consider to be the best software in the industry, and you can also run Windows and UNIX as well. Triple threat. There's also no adware or crapware to slow you down, and much better privacy and security than has been traditionally available on any other platform. You can still get Office and use Google, but you also get iLife and iWork and AppleCare, and incredible service from Apple Stores. Taken together, there's never been a better time to switch to Mac!