Feanor Self-Important?

[Gorthol]

Feanor had free will and must bear responsibility for his actions and their consequences, both good and bad.

We are all formed through our upbringing, our environment and our genes. I think "what you are" and "what you become" is formed through that, i.e. you don't have any "free will" it's already decided for you. Fëanor was decieved by the mightiest of the Valar, and how powerful Fëanor even was, this was no problem for Morgoth, he corrupted Fëanor and is imho the one responsible for what later happened. Cause compared to the knowledge that Morgoth possessed Fëanor was but a child..