backstories on top of backstories

when i first got into this show, i did not realize it was gonna be a backstory every. single. episode. like yes, i know we need to understand why they were on the plane and what their problem was, but i thought it was a one season thing, but imagine my surprise when it KEEPS GOING! not even before their plane, but years and years and YEARS before the plane crash even happened?? like is the backstory really that important? i stopped at the jack tattoo episode because what exactly was i supposed to learn from that? i need to know, do these backstories ever stop? like even on the very LAST episode, is there a backstory?