Also, mathematical benchmarks are not necessarily a good indication of real-world application speed. If you have the technical know-how, you can build your own PC cheaply. Plus, features like SCSI aren't actually necessary for most people, and excluding them brings the price down. Low-end PCs are unreliable for networking. Also, low end Macs are more than twice as fast as low-end PCs.
Macs are easier to use, and much easier to figure out for total novices.
The graphical user-interface is simple and intuitive. Macs are intended to be as easy to use as your average household appliance. When running Windows 95, PCs are now almost as easy to use as Macs. Context-sensitive right mouse button provides relevant options and makes learning new apps easier. Extensive help helps.