Happiness is having a day job, or be retired, with sufficient financial assets to be able to dive whenever and wherever you want. From my very limited perspective of watching professionals in the dive industry working their butts off, hoping against all odds to get a tip at the end of the dive, much less a good tip and a living wage, I could not recommend going in that direction. It breaks my heart to be on a dive boat where I seem to be the only person tossing money into the tip jar. It amazes me that dive instructors, DMs, and shop owners are willing to work so hard for generally unappreciative (no tip) divers. I try to make an example of tipping the crew, hoping others will follow suit, but the gesture usually falls to generate more than a few souls that seem to think a $3-5 tip is OK for a two tank, wonderful dive experience. Makes me mad as hell!