We're in 2013!
I switched two months ago, and I'll probably never go back to Windows! OS X is great and you'll adapt very quickly. The only thing that surprised me was how apps are deleted: drag and drop to the basket! That's typical of Windows vs OS X, "complexity" of certain simple tasks is handled by the OS itself, not by the user.
Except when you drag an app to the waste basket in OS X, it doesn't really delete the app in it's entirety. Many times, many files in OS X are left behind like preference files or other settings. This is similar to past complaints about un-installing an app in Windows (where the un-install doesn't clean up the Windows registry). In fact, I would say deleting an app by dragging it to the waste basket in OS X is worse (in terms of total removal) than un-installing apps in Windows. At least in Windows, many apps have un-install utilities that appropriately clean everything.
To the OP: Don't believe all of the posts that say the switch from Windows to OS X took zero effort or had no (or very little) learning curve. I switched a few years ago and while I enjoy the quality of Mac hardware and stability of OS X, I found a bunch of things in OS X that are/were annoying as heck. Here are some annoyances you'll run in to:
* OS X's version of Windows Explorer is called Finder and Finder is very hard to become accustomed to. If you enjoy organizing your file system (to organize photos, movies, music, documents, etc into folders), you'll find using Finder very cumbersome. Finder doesn't provide you with the ability to navigate your file system's entire structure while looking at the contents of a folder - which means it's difficult to jump from one folder to another to copy/paste/move files. NOTE: Yes, I realize some people will say: why even bother organizing your files? Use iTunes, iPhoto to manage your files...and for those types of files, I agree. But I use my Mac for work and I like to organize my Word, Powerpoint, Excel files into folders for faster access.
* OS X's app paradigm is based on a document-centric view. This means the following: When you launch an app and use it, the app becomes the context for your desktop and windows of that app are "documents" of that app. This is why OS X shows you an app's menus in the top menu bar (instead of showing the app's menus in the window of each app's "document). Why does this matter? well, when you close the window of a "document", the app will remain running and will stay in context for your desktop. So you'll need to remember to close the app in addition to closing windows of that app. For example: Let's say you have Office for Mac installed and you launch Word and open a document. The document appears in a window. When you close that window (by selecting the red 'x' icon in the upper left corner of the window), you'll find that Word is still open. You need to additionally close Word as well. In Windows, if you close the window of a Word document, Word itself will close (assuming no other Word sessions are running).
Here's another reason why this is annoying: Like I said above, an app's menus will appear at the top of your desktop in OS X. An app's menus do not appear at the top of the window of the open "document" for that app. This means you need to scroll more (or rather, move your mouse pointer) to the very top of the desktop to access the app's menu. Or you need to learn lots of hotkeys for that app. In Windows, an app's menus appear at the top of the "document's" window, so you don't need to use your mouse as much.
This is further exacerbated if you have multiple monitors. So if you have a Word document open on Monitor A and you want to access the "File" menu, you may need to scroll over to Monitor B to access the "File" menu. How f@#$# annoying is that?! Mavericks should address this though (FINALLY!).
* In some areas, Windows 7 actually is easier to use than OS X. For example: OS X does not show you a preview thumbnail in the Dock for each session of a running app. Let's say you have 2 Firefox sessions open (one pointing to cnn.com and another pointing to espn.com) and 3 photos open. The sample applies for your photos that you have open. If you hover your mouse over the Firefox app in OS X's Dock, there's no way for you to distinguish between the 2 sessions. Instead, you need to R-Click (or 2-finger click) and then you'll see a description of each session (but no thumbnail). This makes it harder/slower to switch between different sessions of the same app as well as between apps.
Anyway, this is just a small list of some of the challenges I ran in to. You'll find OS X is definitely more stable than Windows (though I found that Win 7 was quite stable on my old Dell XPS 1330). Good luck. And share with us your thoughts once you've made the switch.
