Those who fall killed their sods were ahead of the game. A well planned rotation helps to avoid mid-summer feed shortages. Silage and hay was expensive this summer. Its risky to transfer silages in hot weather. Also, cows don't like the change in rations.
Short rotations reduce fertilizer use.
Open winters are hard on alfalfa. Many were good candidates for rotation. Double crop corn after alfalfa is great. Double crop corn has been real ugly this year. Well, I guess 9 out of 10 isn't bad.