I do indeed amuse my students with my razor sharp wit. But that is an aside from my view of hours building Instructors.
Instruction is about giving of your experience. We owe it to our students to ensure that they gain the finest education and are equipped with skills that will carry them safely through their flying career. A well trained, comfortable and confident student will keep flying. In my opinion only an experienced pilot and capable Instructor is capable of doing this not some wet behind the ears oik seeking to have their flying paid for by someone else so they can jump ship to a 'proper' job at the earliest opportunity.
I love to teach and I believe we have a duty to do it well. Self righteous? Maybe.