What? You’re saying that because we needed leather in the past, we can’t wear cotton now to keep warm? At one point we didn’t have easy access to plant-based proteins so we should continue eating animal products? By that logic, we didn’t have vaccines in the past, so does that mean we can’t use them now? Our ancestors also didn’t have the internet, so why are you here?

The past was a completely different world. Don’t let it hold you back from doing better now.