I am glad you made this thread, as lately I have been thinking the same sort of things.I have realised a lot of people on this section of the forum find parts of culling quite hard, emotionally and whatnot.
Am I bad for not feeling really anything?
Of course sometimes I have been extra attached to some birds and really not wanted to cull them but needed to, but that's happened maybe a handful of times and I've culled easily over 300 birds now.
After reading a lot of the posts here I do start to wonder if there is something wrong with me?
I did find my first cull or two hard, more because I had strong attachments to them, though.
To start with, it was quite hard, but lately its just something that needs doing, as well as I possibly can. While I still feel extremely grateful for the lives I'm taking, it is not something that I feel bad about doing.