Why be a Divemaster when you can be a Master Scuba Diver Instructor?

So basically I've decided why stop my training at simply being a Divemaster, I'm now enrolled in a Instructors course when will roughly be taking place over the next month. When the course is over I will be able to teach any class from the Basic Open Water right up to Divemasters. I will also be getting 5 instructor specialties that I will also be able to teach. The course itself is ment to be taught over a 10 day period but with the instructor I have he allows it to be done over a wider range of time so I've already started the course now, well at least I have the manuals (several 4" thick binders). I also have to get another 35 dives in before I do the actually exams which are going to be the first week in Sept. so I'm going to be spending a lot of time in the water over the next month.