[Man-of-the-Wold]

I think Turgon is the only one who can act with simple truth. The two love each other, and Tuor is a great leader and loved by his people, much as other of the great Elf-friends of the First Age, ironic that they be of the lesser race! In any case, Turgon has no idea of the consequences, and is simply doing what his heart says is right.

For Thingol, he throws out the quest to Beren in a perhaps mocking and foolish way, and he is also being entrapped by the Doom of Mandos, but more importantly fulfilling the Destiny of the Edain and the War of the Great Jewels, consistent with Ulmo work and other forces. Melian chatises him in kind. But he actually recants it, and in fact both Beren and Luthien are prepared to disregard, except for the meaning for Luthien's greatness.

For Elrond, decendent of both, and perhaps disappointed with Men, but not scornful, as some Elves might be, he does what is I think is really the only best thing that he can do for the sake of both his daughter and is foster-son -- in veiw of, royalty, the great struggle, Aragorn's potential, Arwen's gift, and so forth.

So, in summary, Turgon has the joy of doing the right thing in the glory of Gondolin; Thingol speaks rashly but is really the tool of crossing fates, and Elrond is simply being wise in the face of hard reality.