Well, having once been a very devout pagan I can see that the most important aspect has been entirely overlooked in this discussion. That being sin and our Saviour.
A pagan sees things in terms of relativity - not absolutes as we do in Christianity. A pagan doesn't see sin as being a real thing - as such the pagan feels not need for a Saviour. The concept of sin is foreign to them. And since, in their eyes, there is no sin then that means there is no need for confession, no need for repentence, no need of forgiveness, and of course no need of a Saviour. In this regard the pagan is quite ignorant.
It has been said that God winks at our times of ignorance, and I believe that to do true. BUT, if one isn't even seeking the truth, not even trying to become non-ignorant, then I don't think God is so willing to wink at that for there is a difference between being ignorant by accident and being ignorant on purpose.
2 Peter 3:5 - For this they willingly are ignorant of, that by the word of God the heavens were of old, and the earth standing out of the water and in the water:
In this day and age, the "information age", there is little to no reason for someone to be ignorant of Christ. There is an over abundance (in the USA at least) of Bibles, books, audios, videos, missionaries, seminars, churches, and the Internet for anyone who wishes to learn of Christ to be able to do so. If they aren't searching for the truth of Christ then they are willingly ignorant - and I know hundreds that fit this description.
Having been a pagan (Wiccan to be precise) for a good part of my adult life I can tell you first-hand that I am definitely better off, and more enlightened, in my walk with Christ than any pagan could hope to be. Now, don't get me wrong - there are a lot of pagans that are very sincere in their beliefs and worship with all of their hearts. That is not the question however. One can be sincere and be sincerely wrong.
I could go on and on about this, and if any have questions to this I'll be more than happy to elaborate. But make no mistake my brothers and sisters, we should be trying to bring those involved in paganism to the Lord Christ - they are lost and don't even know it - they are sick with the disease of sin and don't even know it nor the cure for it. I think it much greater to sin to sit back and do nothing and allow those good people (for most of them are sertainly that) to perish. We do them no favor by allowing them to stay in the dark.