Speaking of a Silly Poll

[Raynor]

Turgon seems to have the attitude of the 'conqueror', and once settled in his new land, he becomes insular.

Then again, the valar should be quite sympathetic of his decision, seeing how far they went in isolating their own island from the threat of Melkor. [In Myths Transformed, Tolkien does qualify this "rival possessiveness" as an effect of the shadow on the valar.]