I agree here. I lost my father when I was 21 in a car accident - my whole family (mother and 2 sisters) were in the car and he was the only one injured.
Spend time with your wife. Let your children experience her as the naturally do. Drop the camera and live the moment. Take pictures when you would if you didn't have the knowledge. The reality of the recording media can sometimes dilute the memory. I'm sure some of the memories of my father did not happen the way I remember - but they are my memories and I look back at them fondly when I think of my father. I'd rather remember the memories fondly rather than potentially have a "digital archive" show me that it really didn't happen the way my memories recorded them (or potentially having my current view of life polluting the memory.)
We as human beings have survived many many hundreds of years without digital archives. We remember or ancestors. You don't want to look back and think - "I should have been on the other side of that camera."