They are so adamant that people should not attend these games, as they say it is easy to become one of these horrible people and/or participate in the brutality themselves. They both cite that in taking pleasure in the games, desire, jealousy, and general agitation occur. These things are said to be the antitheses of reason and of God. Tertullian gives a much more extensive cosmic argument for not attending these games, but they both make the practical argument that watching people do awful things imbibes you with these awful qualities as well. It is easy to let the horrific scenes rub off on you and make you a more violent, less compassionate person. Both the writers seem to have compassion and pity for those in the arena, whereas the crowd taking part in the spectacle does not.