Inheritance Response- Would it be so Bad?

Inheritance is the fourth and last book in the Inheritance Cycle.  I read the third (Brisingr) about three years ago and was very upset to learn I would need to wait so long for the conclusion of the series.  The main character, Eragon, is a dragon rider.  He is also human, and he has all the faults and flaws we have.  But, as a rider, he is expected to have much more responsibility than he ever imagined, being raised on a poor farm in a tiny village.  He has gone from there to become the third most powerful person in Alagaesia.  The first and second are, as in all books, his enemies, who are also both dragon riders.  One of them, Murtagh, is his half-brother, and the other, Galbatorix, is the king, and has been for centuries.

Earlier in the series, the main characters never interacted with Galbatorix.  In this book, Nasuada, leader of the Varden (the resistance against him), is captured by him and learns his intentions.  And the fact is, they aren't so evil.  He plans to make all races- elves, dwarves, humans, and Urgals- equal, and stop magicians, to, as he says, give no one any advantage over another.  Would that be so bad?  He says the Riders brought fear to the realm, which was why he brought them down in the first place.  But he excludes himself, as he is a rider.  But he wasn't properly bonded to his dragon, Shruikan.  Shruikan was another rider's dragon, and he stole him after his own dragon died.  After that, he grew bitter.  I think that will be his undoing- Shruikan may find a way to rebel against the magic that binds him to Galbatorix and that will be the way to kill him.  Or perhaps someone will remind him of his first dragon, the one who died.  Maybe grief can break through all his strength.  (Yes, I strategize for the characters.)  He seems to be truly invincible, but there must be a way.

Last year, I was talking to my friend about a movie where there was a dark lord trying to take over the world.  She said,  "Would that really be so bad?"  I gave her the how-can-you-say-that-of-course-it-would-be-terrible-people-would-DIE speech, but for this book, it's a valid point.  Galbatorix, in spite of being an evil- I take it back, dominating would be a better word- king, wants to bring peace to the realm.  It wasn't like he was killing people.  He wants equality between the races, and he wants to raise the dragons again.  But the Varden have come too far to turn back now.  They've lost thousands of lives in their war.  They're the ones destroying the realm.  But if they turn back, all those soldiers will have died for nothing.  They have to be committed to their cause, or it will all be worthless.  So it's really too late for them to stop resisting. 

If the Varden were to give up, it wouldn't be the end of the world.  But everything they stood for would be gone.  They wouldn't have anything to fight for.  I think Galbatorix can be defeated.  But is it worth all the lives it will cost?  The same is true for every war.  True, it would be a better world without him.  But then who would rule Alagaesia?  Eragon doesn't want the responsibility.  And the world won't be immediately perfect after he's gone.  Thousands will still be dead.  The Varden will be without a purpose.  If you dedicate your lives to something, when it's gone, your life no longer seems to have a purpose.  Or so it is many books.  What will happen in the end?