Fourth Wing

This was going pretty good, until it wasn't.. I was enjoying the story until about midway through the book, and then I realized I might be getting too old to like or relate to MC's that make everything and everyone about themselves, annihilating the supporting characters who have incrementally more interesting backstories in the process and whom I would have loved to read more about.. again, if not for the MC.
By the end of the book I was wondering how useless can this character be after we spent the entirety of the book sacrificing plot left and right for their sake only to end up with nothing ¯_(ツ)_/¯