Yeah, we get feed from these animals but that is something natural. Also, these animals are killed in a proper way and not tortured. In cock fight, the animals get injured, the blood is shed and they die in a manner that is too painful.
Hey, calling that a natural way why chickens should die because of human consumption will trigger the vegetarians haha.
Might be different views but since cockfighting is a big gambling industry, it won't really stop.
Aside from that, if that operation is legal and all procedures are strictly being followed, we just have to live with that or ignore it. Cockfighting operations also provide several jobs for some people. Again, if anyone sees that as unpleasant, simply ignored it.