Thoughts on C&R fishing

I've been thinking the ideology behind Catch and Release fishing for quite long. Earlier this week I caught a 3.5 kg salmon with fly. It was so beautiful and gave a good fight and then I killed it. Later during the night when I was in the bed trying to sleep I started to think about the fish I had caught and I felt kind of sad for it.
I thought that what if I had released it? But in the end I realized that it doesn't honor the fish, but it's more like teasing and hassling with them for nothing. It's better to fish for food and honor the life of the fish by killing it fast and making sure that the meet doesn't go wasted by taking it to cold pretty fast. And I thank mother nature every time it offers me something.

Don't take this wrong though. I do understand the thinking behind C&R fishing when it is important to make sure the fish population in a certain river f. ex. is not endangered. And I don't condemn people who do C&R also in "normal" river. But you'll never see me doing C&R anywhere. If catch and kill is not permitted in some river, I won't fish there.