Board Thread:Episode Discussion/@comment-14138255-20160207164218/@comment-25396609-20160209180812

Because it is a boring, played-out stereotype.

Father is alcoholic and trained his son as an assassin. Oh, right, that also means he was abusive.

Honestly, it would be infinitely more interesting if he was NOT abusive in that situation. Assassins typically understand basic psychology, and being abusive towards the kid you're training to follow in your footsteps is the best way to get yourself killed.