As the spouse or the assumed second party you have just as much right to call some of the shots in this retirement as it is your life also. If your spouse just assumes by your silence or your tacit agreement that you are okay with his direction who do you have to blame? Him? Yes but you also.
Finally, don’t be afraid to try new things. If bird watching is something you’ve always wanted to do go for it. Just be respectful. Remember that time in your relationship is the new currency. What you spend your time by yourself and jointly will determine the ROI of your joint retirement relationship. Don’t delay the clock is ticking!!