In any true tragedy, death is always a principal player. Being that Sons of Anarchy is basically just a leather-clad retelling of "Hamlet" with motorcycles, it stands to reason that the show follows a similar trajectory.
But although death is always mired in tragedy, sometimes it is also necessary. See what I mean and check out these 5+ character deaths in Sons of Anarchy that hurt the show (and 5+ that saved it!).