Feanor Self-Important?

[Feanor of the Peredhil]

that he was well within his rights to refuse to allow them to be used.

Too true. Now mind you all, Feanor is my favorite character and I think he's the coolest elf that there was, but look at it from a slightly distorted sense:

Feanor lost his gems and wanted to go after the thief. The only way to get to them was to hijack the ships of the Teleri, either by their leave, or without it.

Switch views: After destroying the Light, rather than going to Feanor's place, Melkor veers off and goes to the Teleri and steals their ships. The Teleri are royally ticked and want their ships back, but they can't get to ME without the aid of the light of the Silmarils, so they go and ask Feanor to borrow them, or he can have other choices: he can make them some more (or similar), or he can come along with them and guard the Sils. As if Feanor would have let them have his Silmarils! He would have been preoccupied with the thought that Melkor might take them by force from the Teleri and he'd never get them back, he'd think that the Teleri wanted the Sils for themselves. He wouldn't think intelligently, he'd jump to conclusions, just like the Teleri did, and probably refuse them point blank.

So even though I love Feanor, why on Earth did he think the Teleri would just hand over their ships when put in their positions, he wouldn't have?

Fea