The Zigmeister has a job. Modding/servicing is a hobby he makes money out of on the side. If we were to go away tomorrow, The Zigmeister would still have enough trade to keep him going into 2009.
... and maybe you've not seen the amount of stuff The Zigmeister gave away for free. The posts explaining how all the movements worked, the tutorials, the details. If it weren't for The Zigmeister, I would never have learned what I have learned. There would be no ETA 7750 datewheel tutorial, there would be no knowledge base.
To imply The Zigmeister is rude by leaving is a slight oversight on your part. It's like a finger pointing at the moon, etc.