I don't think it's the favorite part of the process for anyone. I'm looking for the breed of chickens who will climb up on the stump & chop their own heads off for me. Until then, I just have to steel my nerves for the task, and try to do it quickly and well. That's my final favor to them, to give them a quick and painless finish.
It helps that I keep in mind that my meat birds are meat right from the start. I still cannot cull my older laying hen friends, nor the roos who have served as leaders of the laying flocks. Perhaps some day I will, but not today.
Our modern society is very much out of touch with reality when it comes to life & death and killing & eating. Graphic violence against humans is shown on TV & in the movies, yet many folks cannot bear to even think about where their meat comes from or how it's being processed. I think that's one big reason why we have these factory farms, many prefer that the unpleasant business of eating take place far out of their sight.
Most people I know are at least a few generations removed from personal knowledge of processing chickens or other animals for their tables. That's one reason why I wanted to learn, to reclaim this essential survival skill for myself and my children. It used to be a very everyday, matter-of-fact occurance for most households. Few people wrestled with guilt or remorse about it, few children were traumatized by the act. It was simply a way of life, a way to get meat to eat, and folks were grateful for it.
It should help that you've seen other chickens & turkeys being processed. You know that once their heads & feathers are off they look like any other meat you'd buy.
I try to look at my meat birds like I do the produce I grow in my garden. I tend them from their tiny starts, meet their needs for growth, admire their natural beauty, anticipate their tastiness as they mature. It would make as much sense to withhold butchering for sentimental reasons as to let a melon grow, ripen, and then wither on the vine because it was too beautiful to pick.
Instead of saying "what a shame to eat such a beautiful rooster" I say "isn't it great that my meat comes in such an attractive package!"
I wish you success and nerves of steel for your own processing.