I hated school three times in my life. First, when I was introduced to it as a toddler, but I learnt to get over it by the time I graduated. Next, when I introduced my son to it I despised it along with, and much more than, him. The third time when his daughter started hers, I was there to give her a hand in abhorring it.
A human life thus cycles three times the same set of emotions, the same affections and afflictions and fears. Their shades vary with the position of age but the underlying cause remains the same.