I hunt and I fish and that's it! No further explanation or justification required.
HOWEVER

here's a thing or two that helped ease my wife into accepting that:
1.) Buy a wild game cookbook for YOU not her, but make sure it's handy for her. Stress the nutritional value of game and the satisfaction gained from dining on something you chased down yourself. My wife still won't eat most of the stuff I shoot but she understands that I do, and she enjoys eating the upland game at least.
2.) The dog aspect-my wife understands that hunting upland game is what my Brit was made to do, and she actually enjoys that part. In fact she's been bugging me to take the dog hunting.
Other than that, if you have any head mounts that you would like to bring into your house, DON'T! Mine were in the house before the little darlin' moved in, and when she asked if the caribou head could be moved to the garage for redecorating purposes, I pointed out that the caribou was there before she was, and it was going to stay that way.
Seems to have worked for 18+ years anyway.
Good luck (and good hunting)