Without the Spirit of Fire?

[Lhunardawen]

However, if Feanor had never been born, then Serinde would not have died, Finwe would not have remarried, and Fingolfin and Finarfin would not have been born. Hence, no noble houses of the Noldor except for Finwe and his children

What is Middle-Earth without Fingolfin and Finarfin and their children? There would probably also be no Numenor and Half-elves, if you'll climb up their family trees. And Morgoth's evil will still manifest, and sooner or later there would have to be someone standing up against him aside from the Valar themselves. I don't think Feanor would ever match Fingolfin's courage in his wrath.