What Use Is An F-call?

What use is an F-call? Often I talk to fellow amateurs and ask what they've been up in Amateur Radio since I last spoke with them. I'm surprised to report that regularly the response is "nothing much". Digging deeper, it's not that the person hasn't got time, or even a project to do, but more often than not it seems that they're not sure where to start with their idea. Let me give you some examples. One amateur I speak with regularly wants to put a single-person erect-able mast on the back of their ute. Another wants to make a multi-band dipole kit for field-days. Another wants to set-up an ATV repeater and another wants to get on air with HF at home. These examples are real. I'm not naming the amateurs involved - this is not intended to embarrass them. I could list many more, but I won't. Just to make sure. These projects have not been started because of lack of money, or lack of expertise, or time. They have not started because people are not sure where to start. So, riddle me this. In the