Keire had a violent childhood and skateboarding was a way of escape of his reality of life.
His family may not understand why he had to skate but he was probably a way that he released his frustration of his life.
Video Source
He did exhibit anger management issue due to how he was treated.
Skateboarding can be a good way to direct his own path in many ways that he should never give up no matter how life can be.
Skateboard can be a freedom. And most people have to master themselves and the skateboard is a tool for that.
And like martial arts? These skills and confidence stay with you for life.