Been reading my mind, was considering posting the same question.

We tend to use our mobiles, or I will make calls from work (those calls that need to be made during business hours).
Our home line is so dodgy, any bad weather it stuff it up and all we get is crackle, then someone has to come out and fix the line. So I have been calling people back on my mobile.
In an emergency, a home line can still be used for 000 (I believe if there is still a dial tone).