Here's my theory. There are two kinds of people. People who get their happiness from giving, and people who get their happiness from getting. Your the former; and your wife is the latter.
Simplistic, but I wonder if it's true. It seems to me that in long-term marriages, only the givers will survive and be content,.
Me: 50, MLC/WW 45 Young kids Nov 2015: BD1 Apr 2016: BD2 Jan 2017: W filed Feb 2017: D final