I feel bad for bullfighting, but I also feel like the fight in countries like Portugal and Spain is worthless with the current system - Bullfighting is considered by UNESCO and the governments to be national patrimony and culture and thus it is a protected activity as much as monuments, historical documents, etc.
Whoever fights monsters should see to it that in the process he does not become a monster. And if you gaze long enough into an abyss, the abyss will gaze back into you