This attitude that we instructors are only here to build hours so we can move on to better things has to change. Some of us wish to be career instuctors and enjoy passing on our knowledge. I would suggest that anyone who is in it for just hour building should look else where. You should ask yourself just how professional you are. You cannot possible be giving your best to your student. It is just that attitude that leads us to be the bottom of the pile.
As a proud instructor, I would like to make one other point. When I qualified as an instructor my very first paid flight I was in charge, all the responisiblity lay squarely on my shoulders, and I was flying with a very inexperienced pilot. If I had just started with an airline, I would be with a senior Captain, and have a lot less responsbility earning a lot more money.
So come on if you want to be an airline pilot go be one, but those that can teach.