How do I keep my wife happy?

As a woman, we have simple joys. I still believe that the top 3 factors to maintaining a strong and happy relationship are Love, Trust and Respect. Aside from these 3, I believe in having regular dates with your wife would help a lot. That's where you get to know her more each time and you get to talk about things that only for the 2 of you. This keeps the love burning no matter how long you've been married.