Wow, I leave for a couple weeks and the old "problems" get resurrected again!
Jehovah's Witnesses and many former JW's frame this issue to try and make it seem like there is no answer. I wish people would just get wise to the misdirection and stop debating the wrong issue. It is very simple.
The problem that heretics have is not the nature of Jesus. The problem they have is refusing to accept the nature of man.
Scripture is clear that man is a tripartite being made up of a body, a soul, and a spirit.
Genesis 1:26–27 indicates that God created mankind distinct from all the other creatures. Scripture clearly teaches that man is intended to experience intimate relationship with God, and, therefore, He created us as a unity of both material (physical) and immaterial (spiritual) aspects (Ecclesiastes 12:7, Matthew 10:28, 1 Corinthians 5:5, 2 Corinthians 4:16; 7:1, James 2:26).
The material component of humans is obviously that which is tangible and temporal: the physical body. The immaterial aspects are intangible: soul, spirit, intellect, will, conscience, mind, emotions, etc. These exist unendingly beyond the lifespan of the physical body.
See 1 Thessalonians 5:23 and Hebrews 4:12
For many people, the idea of being conscious for eternity separated from God and all the good stuff he made is more than ample reason to suppress this foundational teaching of Christ; the truthfullness of which is guaranteed by God's own blood, and Jesus' predicted self-resurrrection from the dead. People settle into a self-deception of trying to be a good person and hope for the best. The false reasoning allows people to falsely conclude that if they got it all wrong, they will just cease to exist and there will be no cost for this choice. It will all be as if they never existed eventually.
Suppression is a very powerful psychological tool the mind uses to deal with trauma, like the denial stage with a cancer diagnosis for example.
It is this suppression that prevents people from even being able to contemplate the idea of Jesus being both God and Man, and not either / or as unbelievers try over and over to frame the arugment.
The terrifying prospect of being conscious for eternity alienated from God is what drives Trinity debates, not the concept. The concept is easily explained when a person simply believes what God said about the nature in which he made us.