I switched about eight years ago from a PC to a Mac and have never looked back. I find the Mac's more user friendly than the PC's. I am not a techie - very much the opposite - and my new IMac is just perfect for me. The Mac's I've had have been extremely reliable, not prone to viruses or other bugs, and just plain easy to use right out of the box.
The cost is not that different especially if you shop around. I got mine through the university where my wife works and it was a bargain - even came with a free Canon printer.

Hope that helps.

Dan