I'm imagining an outdoor enthusiast who enjoys participating in a variety of activities common on Roatan, where all of my diving experience comes from. When they come to Roatan they like to kite surf up on the north east side, parasail on the west side, love snorkeling in West Bay and West End. And yes, they also spend a morning doing a two-tank dive with any one of probably two dozen shops in West End or West Bay that will take them as a walk-in (or with a couple of days' notice).
But they only come for a week, because that's all the time they dedicate to a Roatan trip. On their other weeks of vacation time they are hiking, or skiing, or mountain climbing, or who knows what else - because they also enjoy doing all of those things. In other words, they are not as hyper-focused on the hobby/sport of diving as probably most of us posting in this thread are.
Let's further assume that in literally none of these activities do they invest considerable time and energy "getting into the details", as posted some dozens of pages back. They enjoy them all equally, but all casually, and do not have the time, funds, or frankly inclination to get as much into the nitty-gritty of any of them as we have about diving because of our passion for it.
The question I asked myself, imagining this hypothetical person, is: "How much should it disturb me if their level of knowledge, or involvement, or even participation in scuba diving isn't the same as mine?"
Frankly, it didn't take me long to come up with an answer...