Some might read this with confusion. After all, if they're like me, they remember these commercials from way back when:
The first thing you have to understand about the "Mac vs. PC" debate is that what most people call a "Mac" is a PC. PC simply stands for "personal computer." Desktops, laptops, and even all-in-ones can be considered PCs.
So what makes a "Mac" different? This is where the second important distinction comes in. Mac actually isn't a computer brand. Mac is an Operating System.
In case you're lost, let's take a step back. A prebuilt, commercial computer is created by something called the OEM, or Original Equipment Manufacturer. Dell, HP, Toshiba, Apple, and Acer are all examples of OEMs. This is simply the company which builds the physical computer from parts.
Mac is an Operating System, or OS. This is simply the software that goes on the computer. Windows is also an Operating System. Windows is perfectly capable of running on a computer manufactured by Apple, just as Mac is capable of running (albeit illegally) on a computer built by Dell or Toshiba. This is because computers all utilize the same basic parts. What software you load on it only changes how you interact with these parts.
So what makes an Apple computer (colloquially or incorrectly called a "Mac" by some) different than a Dell or Toshiba computer? Apple tightly controls distribution of its OS, so that it can only be run (legally) on Apple built computers. Microsoft, however, sells its OS (now generally Windows 8) to any OEM, or maker of computers. This is the primary reason why Windows is run on most personal computers.
So what do all these acronyms boil down to? Essentially this: an Apple computer has the same parts as you would find in a Toshiba or Dell. The only difference is the casing the computer comes in and the OS. That's it. When people refer to the "Mac-PC" debate, they actually mean the Mac-Windows debate. Apple builds PCs too, but by loading a different OS and pretending they somehow sell a different product, they create a clear, if false, distinction between their product and everyone else's. In reality, there is a massive difference between a $2,000 Toshiba and a $400 Dell. However, they both run Windows, and by tricking people into thinking that the two computers, which will perform at vastly different speeds, are the same by linking the computer to the OS, Apple can claim that all "PCs" are slow, based on the performance of lower-end computers, with which most people are familiar.
Of course, most people do have trouble with Windows, and there's two reasons for that. The first is what we in IT call PEBCAK. Windows is a very open OS which allows for a huge amount of tweaking. If you don't know what you're doing, you can and will fuck it up. The second reason is that Windows is prone to virus and malware attacks. While Apple likes to claim that this is due to the inherent superiority of their OS, the truth is that most crackers won't bother writing malware for Mac OS, because most people are running Windows. Yes, a UNIX based OS (like Mac OS) will be more resistant to viruses and other forms of harmful software, but if the market shares were reversed, Windows would be virtually virus-free.
So are there differences between "Macs" and "PCs" as the average user understands them? Yes. Are those differences as black and white as Apple would have them believe? Not even close.
I've used my fair share of OSes. I've used XP, Vista, Win7, Win8, Lion, Mountain Lion, Ubuntu, and Fedora. They're all good for different things. My personal PC runs Windows 7, Windows 8, and Ubuntu. It's faster than any Apple computer in existence and has never had a virus. That's because the parts are way way more powerful than anything Apple puts in their machines and I keep my copies of Windows extremely secure. (Oh, and did I mention that my rig will smoke a Macbook Pro in every benchmark and cost the exact same price to put together?)
The Mac-PC debate is a debate of marketing, not reality. Mac OS X is a phenomenal operating system. But so is Windows 8. Neither is inherently "faster" or "better." I use Windows 7 for gaming, but prefer Mountain Lion for everyday browsing (though since installing Win8, that's definitely changed, let me tell you). Those familiar with computers generally won't pick a "side" because there's no side to pick. You don't debate about whether a pickup or a Ferrari is better because they're completely different vehicles built for completely different purposes. Militant Windows or Mac fanboys are looked down upon in the power user community because they're arguing about distinctions that don't really exist. Computers running Mac OS can be just as slow as computers running Windows. Trust me, I've seen it. The difference between any two systems is largely in the hardware used. Yes, Mac or Linux is less intensive - all things being equal. But plug a better processor or more RAM into one box and it will run faster, regardless of the installed OS.
If you're still confused, buy a "Mac." It will make your life so much simpler. If you're following so far, get Windows OR Mac; your choice. If you knew all of this before you started this post, good for you. Go install both with a side of Linux.