Human ethics are tricky :-) There's a lot more at play than just killing vs not killing. Some types of killing may be acceptable, and some may not. For example

Human ethics are tricky :-) There's a lot more at play than just killing vs not killing. Some types of killing may be acceptable, and some may not. For example meat-eaters, which as you pointed, effectively kill animals, may disagree with other ways of killing - for example movies production or fur coats. The most interesting case I've heard about this subject is in the movie Cannibal Holocaust. Among the other animals, two monkeys have been killed for script purposes, however, they have been eaten afterwards. Which are the ethics of this killing? There's no absolute answer¹ ¹=I'm not implying, just exposing.