I made the leap 25 years ago and have never looked back!. You will not get rich, but will have the experiences of no others.
I went on my first dive trip to the Cayman Islands and the people working on the Holiday Diver were having just too much fun, and I wanted that. I asked one of them how they got that job and she told me she was an instructor, so I returned home and started working on my Instructor certificate. However, my CD told our class that one we obtained that rating, we were really just a dime a dozen, so I knew I needed more.
I taught as many classes as I could (I was doing this part time only) and continued my education. I received another 5 or so Instructor speciality ratings and then decided where in the world I wanted to be and went.
I took a leave of absence, rented out my condo, put my stuff in storage and left. I worked throughout the caribbean for 5 years. BEST TIME OF MY LIFE. Although living abroad is not for everyone, I watched many a SCUBA Instructor have a meltdown during their time away from the states, but I loved it.
You will not get rich, but it is only the experiences and memories that can never be taken from you. I returned home and got a real job again, but remain teaching on a part time basis. There is no bigger thrill for me than to help a person experience breathing underwater for the first time.
I have never regretted my decision.
If you have time, check out some of my videos. They also are a passion and good luck with your decision.
YouTube - Manta Salsa Dancing on the Solmar V in Socorro Isles