Non sequitur, food isn't synonymous with killing animals
>Almost all life consumes other life for survival
Appeal to popularity, almost all life does all sorts of things that we don't condone or have decided is suboptimal.
>There is nothing more natural than eating.
Non sequitur and naturalistic fallacy. Eating is natural but that doesn't imply killing and eating animals is natural. Even if both are, that isn't in and of itself a valid justification for that behaviour.