Wife used to ride with me all the time. We got out of riding for quite a number of years. Then more recently, we went on a couple of lunch rides borrowing one of my friend's bike. Then, one day when I was out running around on my neighbor's son's FZ6, I had a wreck. Left the road and low-sided on a curve. Nothing too terribly horrible, but it was a crash. I obviously bought the bike, got it up and running again, and rode it for about a year before selling it to buy my Connie in March 2011.
Now she will not ride, will not even sit on the bike, will not touch the bike, will not even discuss motorcycles, and asks me to always call her when I get wherever I'm going so that she knows I'm alive. Oh, and she raised my life insurance policy.
Life is a risky business. Enjoy it while you can. If wife's un-enjoyment of your riding is a bigger issue to you than your riding enjoyment, sell it and find a new hobby that she will enjoy with you.