I am not a vegan but I think it would be useful for every meat eater to humanely kill and prepare an animal to eat at least once in their life. Having done so, I think I learned a lot about death and whether or not I was willing to eat an animal after preparing a few myself. I also think it is important to be aware of our own mortality and to think about it a healthy amount.
https://en.wikipedia.org/wiki/Memento_mori