WPA2 is strong enough to require supercomputers running parallel-computing over many days in order to break it (and they still haven't)
If you use a strong key.... otherwise WPA2 is as useless as the rest of them and can be broken in a few minutes.
You are also reliant on correct bug-free implementations by WiFi vendors.
But overall, I agree, you average home user who probably hasn't yet mastered how to correctly update or backup their computer, probably doesn't need to concern themselves too much with the nitty gritty of WiFi security because they've got better computing things to worry about.