I used to be at the other side. My husband liked to try out diving, but I had all the negative things to start as a diver, I couldn't swim, I was scared of fish, wreck and dark water at night. However I had one major weakness which is I always want to try everything, so I followed him and tried to dive, we were certified together.
First ten dives, I grew from hating it to so-so, (went through bad times freaking out seeing big dark coral, equipment relating stress until I realized that diving gives me feeling that I can fly), then we had our own equipment, the stress and confidence problem caused by bad equipment dissapeared and I started to enjoy the dive, we met few friends and because of that we made one big step, instead of nearby getaway, we went to great dive holiday and from that moment, I love this activity and he always says I'm more 'on' than him now.
I'm still afraid of fish, but not underwater ones, I'm afraid of those in aquarium who smell and like to jump out and land below the slipper accidentally. Hehe... I guess I'm scared of unnatural-habitated fish, if it's a word.
I think, you can try to talk your wife to try it, at least try first before she decides to hate it forever, but if she has problems, such as health or some water phobia, you have to respect her preference. We are the only couple in our diving group, the rest dive without their spouse and they are able to find some solutions for it. I have to admit that their spouse have great almost unbelievable degree of understanding, but again, I might not know the level of their relationship, whether they fight everyday or not, because we respect each other not to ask too much about personal problems. But when diving, they are the happiest person we know, although we must be the happiest and the luckiest to be together.
Fyi, I have other bizarre things I want to try, I have tried but always fail, to ask my husband to join me.
