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So you like to beat off solo?
Sure, and the same reasoning is what prevents perfectly capable solo divers from diving solo in many places.
Some things just evolve differently in different places. There are regional differences in how people dress, talk, what they eat, hand gestures, etc, etc. Probably not surprising that some sort of "local custom" differences would evolve in dive boat policies as well.
We used to have a very strict policy - now just tradition - that Coke products are not allowed on board. (There was a very good reason for that policy, but I won't get into it.)
I've heard of the coke problems some of you NJ guys have. Probably best to leave that stuff on shore.