Indeed, I worked on a farm when I left school and that laid the foundation for me going vegan some 20 yrs ago. Some of the things I saw and did were pretty horrific really. I also went to farming college and we had to wring a chicken's neck then cook and eat it, which to be honest, I did do without many qualms at the time.
We also visited a slaughterhouse, getting an insiders insight most people will probably never see, happily for them.Some of the things I saw stayed with me for years, honestly. When I finally went vegan, I was living in a small bumpkin town in north warwickshire, it caused me loads of trouble with the natives, especially with the local hunt, who are a bunch of violent wankers even by hunters low standards (tbf I was a known 'anti' at that point). Anyway, nowadays, I reckon veganism is quite easy, back then it was all plamil milk and sos-mix (I eat a lot of fake meat type food.)