At this stage of the game, its par for the course. We are at a stage of our lives where responsibilities and schedules pertaining to family, life, and career fill up our time. Although social engagements have to be planned, you still appreciate the friendships and maintain a good outlook upon finding the balance. In the big picture, when children move on to create their own lives and adult careers are more settled, there will be more opportunity for those 'less-intentional' gatherings with best friends that you desire. Its all in time.