If the pay was better I would become a full time CFI because I have 3 young children, so I can't be gone 4 days a week at an airline job. I have a cheap house and my wife works also, so even if the pay was 40-50k, I could live with that and be fine. But I would never leave my day job to be a CFI now because they make so little. So I do think $$ is the biggest thing. But like was stated above, if you double or triple the CFI salary, the cost of training will go through the roof...