THen I woke up. Well, a piece of plastic rocketing through my eye which ended the military career and the shooting, and the Law Enforcement career I was one test from being accepted into, woke me up. I was laying in the hospital bed efter surgery number 5 of 9 on my right eye and she commences to complaining that all I do is lay around in the hospital trying to get out of doing the work that needed to be done to buy her and the dog a house. Imagine that! My accident and loss of everything I had built my life toward was not only an inconvenience to her, but it meant that I was so lazy to get a "real job" I decided to poke myself in the eye! Oh my little angel.
Wow...getting long winded on silly stuff. Point being, some people just dont understand what makes others tick. She hated me going to a competition, but she was so happy because my mood when I got back was so good. But she never wanted to hear about it or even talk about it. Then she couldnt get why my mood soured. Never could she make the connection that shooting satisfied a deep part of my mental state that made me...well ME. It was mind cleansing, it freed pent up emotions and aggressions. Sort of like an enema for the soul. She never got it.
Maybe take her and your son on these diving trips. Make them family affairs where the majority of your time is still with them, but you can still get a few dives in say during nap time.
Otherwise, just may need to accept that you and diving and your wife are just not compatible in a way you emotionally/personally/physically/mentally need it to be. If that's the case...Brother Diver there are decisions to make I am sorry to say. Regardless, some long and deeply serious conversations need to be had.
Sincerest apologies for any offense, as none was meant.