I wish my dad was a butcher so we would get good cuts of meat for dinner!
My grandfather was a butcher. He used to slaughter animals and dress their flesh for sale during the 1950's.
Did it bother him at all to be part of the slaughter?  I live near a slaughter house and sometimes the smell.. furnaces for carcases.  Ugh.
Butcher
A butcher is a person who may slaughter animals, dress their flesh, sell their meat, or participate within any combination of these three tasks. They may prepare standard cuts of meat and poultry for sale in retail or wholesale food establishments. A butcher may be employed by supermarkets, grocery stores, butcher shops and fish markets, slaughter houses, or may be self-employed.
Butchery is an ancient trade, whose duties may date back to the domestication of livestock; its practitioners formed guilds in England as
"Kill me so that a good stew may be made of my flesh" and would never eat anything. Avicenna was persuaded to the case and sent a message to the patient, asking him to be happy as the butcher was coming to slaughter him, and the sick man rejoiced. When Avicenna approached the prince with a knife in his hand, he asked "where is the cow so I may kill it." The patient then mooed like a cow to indicate where he was. "By order of the butcher