Aloha and welcome aboard!
My wife and I had this very same dilemna many years back. We sold our home, started building another and my sailboat is still here in the yard 20 years later. I was 46 when I retired and thought I'd have all the time in the world to go cruising. Now she has lost
interest completely and I have the dream and that's all. I should be getting the boat in the water
in a year or two and hope I don't have to leave without her.
My advice is to let your wife read this post and try to convince her that going now is in your and her best interest. Your health
will not improve with age.
I hope your story turns out better.