Hi there. Seems no-one else is chipping in here so I'll add my bit for what it's worth. I have just left full time Instructing after two years, during which I had an excellent time and met some really great people - Students and Instructors alike.
Certainly, in my two years' (with 1100+ hours Instructional) I did not get bored once. After all, a good approach is to assume every Student is out to kill you in ever more spectacular ways! That keeps you focused! Circuit training gives them endless opportunities!!! Just when you think you've seen it all...... ATC also enjoy watching the "sport" as well!!!!
What I found was, as the job becomes "easier" (and I use that term with caution), you can spend more time being able to suss out exactly how your Students tick. However, the pay is not so good at the lower PPL levels. To really go into it full time you need to be Instructing at Commercial levels (ie Instructing CPL and IR students) but those jobs are a bit more tricky to come by - almost impossible at present I should think!
So, in summary, for the majority, Instructing is still only a temporary job - the Bank Manager will soon be on your case asking when you expect to have some money coming in rather than always going out! If you can land a Commercial Instructing job then the pay is better but, of course, the Schools often tend to want ex-Airline people if possible so as to bring the realism of the Big Picture into the training.
Hope this has helped a bit. All the best with your plans and I am sure you will find Instructing an amazing job as long as you remember that your Student is No 1. I'm sure you have both had Instructors who like to do it all themselves - I know I have and it was quite disheartening when I was a Student. Or maybe it was just my flying???!!!!!
Regards, H 'n' H <img src="cool.gif" border="0">