Comment by dssu

Waking up early is just the beginning. There are also heavy chore responsibilities, 10+ hr full day of training, frequent beatings.

And the physical disciplinary punishments are brutal.

Oh and you have to keep this up for 5-10 years. Very reasonable to see why someone would not want to commit to this.

Many of the warrior monks were trained as very young children so they had not much say in the situation and just had to deal with it.