Linux is no harder to use than Windows, and has many more capabilities. It just takes minutes to get familiar with a distribution like Ubuntu or Fedora, which come with many programs installed.
If you need commercial-quality software to work with business documents, Internet/networking, or multimedia and graphics, it's there right out of the box. Want more than that? Linux can do it; there are hundreds of free, high-quality applications you can find and install easily.
You shouldn't assume however, that Linux is a clone of Windows. To know what to expect when stepping into it, this article will help you with the basics of switching to Linux.