Well, this could be quite true-perhaps that is why I prefer to Solo dive. I do maintain my cars and bikes but, maybe, not dive buddies, In one case, a diver ripping my reg from my mouth-that was a diver I had been diving with about 150+ times, a USMC officer, very well fit, ran out of air while looking for a final legal ab off Pt. Loma. He just lost it and went on to my reg like his Mothers Teat. I made a free ascent. We stayed friends, maybe that was my bad choice. On another occasion an engineer with a major SCUBA company was testing a new 1st stage at about 120-140 FSW off Grand Cayman, his test reg failed, he came and sat on my head, taking my primary-one of his companies regs, by the way-I went to my secondary, an old Poseidon Cyklon 300, we got it all sorted out and made it to the surface. No real harm done. We had a nice dinner that evening.
Stories like this is why I went to donating my primary and having the secondary on a necklace. I appreciate learning from you and others like you.