Generally those who are fond of fishing or shooting have cruel hearts. Otherwise, there is no reason why they could derive pleasure in murdering innocent creatures.
Surely, fish and birds would prefer living to getting killed.
Except for those who make fishing or shooting their calling, it is nosense for those who are well off to say they cannot sleep well unless they seek the lives of fish or birds.
Natsume Souseki Botchan page 48.