Ah, brothers, as I've two of my own I can definitely speak to this. A few of my best scars come from my brothers, and I'm the eldest. Boys need to learn how to deal with issues peacefully , yes I fully agree. We still need them to learn to be " scrappy " for lack of a better term. Things like negotiating skillfully we first learn from our siblings. I like the martial arts idea, we had boxing gloves. Good luck dad, peace JerryT.