John never wanted children, and when he had you, his decision still didn't change 100%. He didn't want to deal with you, even though it was what your mother most wanted before she passed away. You were too young, and those words caused your departure:

"If you're between 12 and 18, you're eligible to become a cadet." They didn't even make sure to check your age properly. He lied so he wouldn't have to deal with your childish behavior. And even though you were crying while hugging his leg, he didn't seem to want to repent.

—"I've had enough. If you can't behave, they'll make you do it."— he grunted, crossing his arms. But.. Army didn't need you, right?