Can you talk a good dive? Then become an instructor.

Teaching scuba diving is not something to do as a career.
The demographics of your average scuba instructor is male, between 20-30, has a diploma, plus a degree in something equally useless like art or english literature. they cultivate a slightly arrogant air of elitism, the perceived invincibility of someone who can drink a Marseille dockyard worker under the table whilst continuing to dive every day without the namby-pamby annoyance of sleep.
It is a job to do when you have run out of ideas for the time being at home. Take a sabbatical, go become a dive instructor and try and beat the Dutch and the Swiss to all the best jobs, whilst only speaking passable English!

Young instructors are bores, generally. They slag off all other training organisations with aplomb. Having only had qualified divers to go on, the assumption is that if the diver is crap, the training agency produces crap divers.
The instructors who have had a little experience in the resort environment have ceased to worry about the training agency being crap, they now target whole nations of people being crap divers!
In the grand scheme of things, there are countries that are ranked in terms of “How much instructors hate training their people” Countries where the whole population is lumped together because of an instructor’s hangover getting in the way of teaching a perfectly simple diving skill, to a person who doesnt speak a word of English!!

The very experienced instructors realise that it is the crap instructor that produces crap students. (Although certain countries do have a certain learning gene missing)