"Enemy turned the entire northern mountain range into supervolcanoes, killed tons of people, organized resistance to him collapsed and he could just kind of pick off the remaining kingdoms at his leisure. He lobs a Silmaril at Doriath. They keep it. They genocide their Dwarf population in a fit of paranoia, Thingol's killed, Melian stops maintaining the protections because she completely loses it without him - we asked them to give the Silmaril back, they didn't send back our messengers - we sacked Doriath. I died. Moryo died. Curvo died. Couple hundred thousand people died. A three-year-old girl escaped with the Silmaril. Took it to a refugee camp by the mouth of the Sirion. We found out it was there.
You tried to delay, I think. Twenty years of resisting an oath, but the thing about doing that, is that it slowly wears away everything you care about which isn't the oath. Meant when you did sack Sirion it was - even worse than it had to be, probably - I don't even know how many people died that time, some of your own people tried to stop you and they died too - Amras died there -
- and then the Valar noticed that Beleriand had a population of approximately fucking nobody and now was the time to come fight the Enemy. And they did. And it took sixty years but they won, and afterwards they claimed the Silmarils as spoils of war. And you wrote them letters, reminding them of the oath, which they ignored. And you slaughtered your way into and through the victorious host of the West, and then you took the Silmaril and leapt off a cliff with it."