Turin the Hopeless?

[Aiwendil]

Davem wrote:

And, unfortunately, I fear that this work will never be fully appreciated as a work of literature in its own right. Read as a part of the Legendarium, in the light of the other writings, this is a supremely unncessary exercise - Bad guy triumphs temporarily, but its always darkest before the dawn, & just when you think all's lost, the sun comes out & everyone lives happily ever after. Pointless excercise & a waste of time & money for all concerned. We got that from LotR.

Are you really claiming that :

1. LotR has a simple "everyone lives happily ever after" ending
2. The Silmarillion has a simple "everyone lives happily ever after" ending
3. Once there exists one story with a happy ending, it's pointless for there to be any more
4. Tolkien, contrary to all evidence, would have published the 'Narn' on its own, deliberately suppressing the tale of Earendil
5. The eucatastrophe of the War of Wrath erases all the suffering of Turin and his family; tragedy is so weak a thing that subsequent joy robs it of its potency?

I think that each one of those points is clearly false.