They fight quite a bit, sometimes quite physically. I attempt to stop them obviously, but I just get worn out from constantly separating them, telling them off etc.
DD just got kicked in the cheek by DS and is cross with me for not rushing downstairs to respond to her cries. She was sitting on DS, wrestling him, when he (accidentally I think) kicked her.
To my mind, if you fight you're going to get hurt. Life lesson. And I'm fed up with being referee. AIBU?