#second age problems

Leaving aside that Elendil and his people definitely want revenge on Sauron for Numenor, the alliance becomes deeply personal to Gil-Gilad as well.

1) Sauron tortured and eventually had Finrod, his great uncle killed. (And given Finrod’s temperament and personality, he probably hung out with his grand-nephew, I doubt he was an aloof uncle).

2) I’m not saying he and Celebrimbor were best friends, they definitely disagreed on stuff but they are cousins in a decimated family and presumably would have survived the fall of Nargothrond together. Guess who else Sauron tortured and killed...

3) Sauron also sued for mercy and pretended repentance at the time of the War of Wrath, Gil-Galad was the leader of the Noldor in Middle-Earth at the time. I’m guessing he has a bone to pick about the lying murderer’s fake new leaf act.