Believe me, I have heard plenty of the rain on your parade types since getting my DM certification - yes it can be much more difficult to find work as a DM as opposed to an instructor, yes it can be difficult to find work as a foreigner in this area of the world, but just like in any other job, if you put your mind to something and keep at it, you will have a greater chance of success. Also, certain countries/areas are more difficult than others. I have worked with plenty of other foreigners in SE Asia.
Finding
good-paying work - well, that's another story entirely lol. I would not say that I mostly live off savings as I have found several jobs that include accommodation & meals, but having some cash in the bank when I started this whole crazy adventure has definitely saved my butt more than once! You sure don't get into diving as a career for the $$$, but it certainly is an adventure, and I am enjoying it quite a bit.