You could be with your partner for years at this point, but maybe you don't know everything about your significant other or at least not as much as you think that you do.
The best dates, in my opinion, have always been ones that encouraged conversation. If we go someplace with loud music or to see a movie, how am I suppose to get to know the person that I'm with?
With children, you have diaper changes, play-dates and doctor's appointments on top of work, house cleaning and cooking, that it is hard to make time for anything else!