Hey, tonedeaf.
You'll find plenty of information on the Mac vs. PC debate on the web by doing a quick search. Plenty of people have plenty of opinions.
I use both. I'm typing this on my new MacBook Air, but I normally use a PC. Depending on what you want to do with it, you might not notice much difference between the two platforms. For web-surfing, I use Firefox on both systems, and it works exactly the same.
Both Windows 7 and OS X Lion have some learning curve, but they are also both easy to use. Graphical user interfaces on operating systems have come a long way since the 90s, and I consider them to be on par with each other.
If you have specific software that you need to use, check what the OS requirements are. Not all software will work on all operating systems. If you have specific connections that you need to make (USB, firewire, whatever), make sure the hardware that you get supports it.
Mac hardware tends to be more expensive than PC hardware for comparable specifications (amount of hard drive space, RAM, processor). I tend to like the form factor of some Macs better, so sometimes it's worth the price premium to me. I also wanted to try out OS X Lion, so I got the MacBook Air.
As a final thought - you can install Windows on a Mac and run both operating systems on the same machine. The price premium is higher going that route, as you'd pay a premium for the Mac hardware and then have to buy Windows, too.