Harvesting is about simply enjoying the love/light of a higher density.

[zenmaster]

So one who is not polarized will simply not want nor have a taste for a higher density. Is this correct?

3D and 4D are about polarization with regards to harvest. Entities have a spiritual nature which desires wholeness. The way that wholeness completes itself is unique to each, but that taste is always present in some distorted form. A polarized entity in 3D would begin to appreciate the provided learning opportunity and begin consciously participating in the incarnation. Entities with billions of years more experience than a harvestable 3D native wander back to 3D vibrations to learn.