Well, if by few hundred years you mean at least ~2.2 millenia then yes, because Buddhism's dont-take-life preaching is at least that old.

And since when did the ethics and normalities of past become the standards by which our present should be governed? If animal slaughter is alright because it was okay a few hundred years ago then slavery, child marriage and hundred other nonsensical stuff should be alright as well. What we do now should be determined by how our society feels now and how it wants to invest in the future. Arguing that that our present actions should be governed by medieval ethics is lazy.