This happens to work out nicely if your spouse, kids, parents, employees, whoever only know how to use Windows, Mac Os, well you get the picture. Not having to run copper is also a bonus. Then there's the problem of actually running the cable. Most homes are not designed to support an Ethernet network. With just an access point, a couple of wireless NICs, and some basic networking know how you can have an instant network.
Administration is also a snap.
For most systems all you need is a web browser. A bunch of tools are usually embedded into access point. Besides the general configuration utilities, you can monitor signal strength, throughput statistics, logs, etc. This is a nice touch for easy management. In other words, you have to have the correct SSID to attach to the access point.