I'd argue that some doctrinal differences may be worthy of debate (because we always want to seek the truth not our personal preference), but some doctrinal differences make such a difference in what we believe that they are worth division.  

Sadly, the deity of Christ is one of my "no compromise" doctrines.  If you don't believe that Jesus is God, then you don't believe in the same God.  If you don't believe He is God, you are denying your savior and creator and I believe you will be one of the people described in Matthew 7:21-23
"Not everyone who says to Me, ‘Lord, Lord,’ will enter the kingdom of heaven, but he who does the will of My Father who is in heaven will enter.  Many will say to Me on that day, ‘Lord, Lord, did we not prophesy in Your name, and in Your name cast out demons, and in Your name perform many miracles?’  And then I will declare to them, ‘I never knew you; depart from Me, you who practice lawlessness.’"

Some doctrines are critical to salvation and I believe the deity of Christ is one of them.  Some doctrinal differences can have positive or negative influence based on whether they are truth or not, but do not influence whether we are a true, born-again Christian or not.

I want the best for you and am willing to spend time defending, using the Bible, the deity of Jesus and why it is so critical.  I hope my disagreement will not cause you to withdraw and avoid contact.  An honest debate can help us all to come to a greater understanding of the truth if we are all honestly seeking it.

I will pray that Jesus will reveal Himself to you.