A very interesting read. Nice to know so many of our fellow divers remember what it was like to be a beginner, and are willing to help newcomers to the sport. Thanks!
After 39 years, I am still learning, and love to spend time listening to another diver who has good advice, or an interesting point of view.
When my teenagers became divers it was glorious fun diving with these new diver, and my girlfriend has back problems, as well as not yet being a confident diver, so I carry tanks, check gear, etc.
Sure, I too have had "insta buddies" that I wouldn't dive with twice, and seen divers on trips that were walking disasters, but this was due to their personallities, rather than their lack of experience. (The memory of one vacationing "instructor" I watched in Belize, will always haunt me!)