>>114
>loss of magic in the world
Would have happened regardless. The marring of Arda was before Fëanor's was even born.
>the removal of the other species
He only indirectly caused the death of the Noldor and Sindar of Beleriand. And the Sindar would have been fucked regardless since Morgoth was going to do as he will with or without Fëanor's rebellion. In fact were it not for the Noldor they'd have been even more fucked.
>the the loss of long life for Men
That was no fault of Fëanor or even Morgoth. We started with hundred year lifespans that got bumped to several hundred years by the Valar, and the Númenórians lost that through their own pride.