Scuba can be an experiences type of endeavor. For me, hovering with sand tiger sharks over the wreck of the
Caribbsea and hanging with big barracuda under the dive boat, hovering watching a large green moray close by, seeing my 1st reef sharks, approaching and photographing large goliath grouper, getting buzzed by a sea lion, feeling my fin hit something mid-water and looking down to find a harbor seal messing with me, being approached by an electric ray, finally figuring out over extended observation that with weird ball of crud/goo I was looking at was alive (California sea hare)...
And what about people who go on trips diving with tiger sharks cageless, or in cages with great whites? Snorkeling with whale sharks? And there's more fringe stuff you can do...
I suspect millennials often get more post-high school education, as someone else described move to go to college, then for a job (if they don't move for professional school or more training first), and these days that job's a lot less likely to include a pension or the employer to be 'permanent.' Are they more likely to live adult lives far from the communities and families they grew up in?
If so, the mindset buy a house, car, maybe a bass boat or SUV (I live in the south), basically amass stuff, may not be ingrained.
It's true people these days have more choice, both at home (game systems, internet forums, rapid mail order to get stuff) and abroad (I think more people these days travel - such as cruises, and fly more often). But that means skiing, lounging at tropical A.I. resorts, cruising and so forth are potential competitors. Especially since some of these are family things. In my parent's day, recreation was local - fishing, deer hunting, gardening, flower gardening, etc... Flying to a foreign holding to goof off for a week outside of a honeymoon was practically unheard of.
How many forum posts read like this 'I got certified many years ago, then got married and had kids and got out of it, now the kids are grown, I've got more time and money and I'm getting back into diving...' Maybe instead of targeting 20-somethings hoping for lifetime participation, especially since some thing a lot of the money to be made on a diver is early when he gets his initial gear collection, perhaps hitting the mid-life cris
For me, considering a dive trip includes a question; do I go solo (cheaper & a lot more diving) or do I bring my wife and our little girl along? I've done it both ways. Scuba requires more dedication to participate in than, say, cruise ship excursions (e.g.: parasailing, river tubing, rainforest or Mayan ruin hiking, dolphin encounters, etc...), and if you really want to see under the sea, you can visit a public aquarium with huge salt water tanks.
I am one of those. I don't think it's my age, I think it's that I really enjoyed catering to the old style rough tough dive anything person who learned to dive and "became a diver". Those folks are out there too, but we see far more folks who want to do a 2 tank resort course, see the reef, and go sailboarding (is that a thing anymore?) paddleboarding in the afternoon.
I chose not to cater to those divers, had the opportunity to sell my business and jumped at it.
These days, those people have the option to go tech. and try their hand at really deep diving, cave diving, etc... People like me who stick to recreational make a decision to basically stick to less complicated diving with a larger margin for error. Look at forum discussions about dive planning when tech. folks get to talking.
My question - does the diving you've been offering
require that kind of 'tough' diver? If so, how and why? If not, you're going to get a lot of the other kind.
Richard.