NWGratefulDiver:I don't expect it to spread ... rather the opposite, in fact.
"Prejudices" are typically nothing more than a natural (or "vested") resistance to change ... I think we'll see something similar to what happened to the opposition to the recreational use of Nitrox some 15 years ago ...
... Bob (Grateful Diver)
Solo diving has been around a lot longer than Nitrox. It might just be me, but it seems that it's a more sensitive topic now than it was 25 years ago.