For some reason cannabis consumption has been stuck in the primitive dark ages for...ages.
When they extract essential oils from a flower do they light the whole flower on fire? No, they heat it gently. What's left over in the bowl or from the joint when you combust (smoke) weed? The answer is white colored, wispy ash. That's because the black <deleted> went inside YOU. What's left when you use a dry herb/flower vaporizer is black colored, dense material. This is the healthy-er option. That doesn't mean it's healthy. You are still sucking in hot, oily vapor. But it's way better than setting it on fire and sucking it in which is just plain stupid.