Macs are perfect for what you need it for. Some people say that Macs are good for x, while PCs are good for y, but really, it's totally irrelevant. You are going to find the same capabilities in a Mac as you will in a PC, with one exception: video games. But even then, all new Macs are capable of running Windows and Windows software, so that's a moot point. You're also going to hear a lot of people say that Macs are more expensive. I encourage you to put this myth to the test, because you will be pleasantly surprised at how cheap Macs really are. For instance, iMacs and Dell's XPS One are considered "equivalent" machines, but the iMac, at the same price, has a larger display and better, faster hardware.
Macs are renowned for their user-friendliness and ease-of-use. In fact, this is so much the case that some people claim that they are "toy" computers created for "retards." Jealousy, I say. =) There will be some transitioning pains, such as getting in the habit of using the command key in place of the control key for things like copying and pasting, and quitting applications instead of simply clicking the red "X" icon, but they will pass quickly. If my brother, mother, and I, after using Windows for 15 years or longer, could switch to Macs and get used to them within a few months, then believe me, you can to!
Another benefit of Macs are that they are inherently more secure and reliable than Windows is. The reason being is that OS X is built off of a Unix core used by BSD, which is world-renowned for its security and reliability. This means that you don't have to constantly worry about being infected with viruses and spyware. Furthermore, OS X is pretty much maintenance-free. You don't need to routinely defrag your hard drives, for instance, like you do in Windows. It's simply an easy computer to use.
If the need to use Windows software ever arises, you can use Parallels or (better, in my opinion) VMWare to launch up a virtual copy of Windows to do so; no rebooting or changing computers is needed. You will also be able to search through hundreds of thousands of applications for whatever you need with sites like macupdate.com, versiontracker.com, http://www.apple.com/downloads/, and http://osx.iusethis.com.