Kourtney Kardashian Barker shared her sentiments on the season this weekend. The reality star, 43, on Friday posted about her excitement that fall has arrived on her Instagram, saying the season makes her happy. “There’s just something about fall, back-to-school night, bedtimes, carpool mornings, tea and movies in bed, football games, pumpkins, my good morning song to wake everyone up, that makes me …