well this is not about sailing but about marriage. I married two times and the last one is going on for more than 25 years so I guess I know one or two things about that and one of the more important is that you cannot let go what is really important for you and the same applies to your wife.
If someone let go something that is really important that regret is going to bit hard on your life and it will be the sub-conscious motive for a lot of bitterness that will poison your relationship and can even end with your marriage.
So, think well if sailing is that important to you and if it is, you cannot put a price tag on it (providing you can afford it as a life choice) and should tell that to your wife. Of course, as someone as said, be prepared to compromise on other things