Aside from the obvious marital benefits that come from keeping romance alive, there is another important thing to consider: YOUR KIDS ARE WATCHING.
Whether you intend to or not, you are teaching your children what marriage is supposed to look like. You daughter is learning how to be a wife and what to look for in a husband based on the example you set. Your son is learning how to be a husband and how to treat his future wife based on the example you set.
If your future Son-in-Law treats your daughter the same way you treat your wife, are you OK with that?
Will your future Daughter-in-Law thank you or resent you?
Sooner or later every couple has that awkward moment when one of the kids wanders into the bedroom and sees something you wish they hadn’t seen. Don’t worry, they’ll recover (with a little therapy and some ice cream). You should be much more concerned with the things your kids see when you’re not behind closed doors. Like it or not, you are building the framework for their future marriages.