99% of meat comes from factory farms in the US. For Europe, it’s around 75%. Unless you know where the meat came from and how it treats its animals, you can safely presume the source animal was tortured for it. Calling factory farming abhorrent doesn’t mean much if you still regularly pay for it to continue.

Because the chicken is incapable of acting morally. Humans should hold themselves to a higher standard.

Vegan activists tend to consider hunting to be a low priority for reasons similar to what you’ve described. It doesn’t add much suffering overall assuming the death is quick. Instead, the focus is on the tremendous suffering involved in the meat industry.