Three years in one save that I am hanging on to no matter what. I play it off and on. I guess I have an attachment to it because it's the one I started when I first became interested in Sims4 then left behind as more packs were released. I load it then make changes according to what new content has been added to the game. It's the one where I was playing the premade families and because the saves I play now have no premade families in them I can go back to this one save if I feel the need to mess with the Pancakes or the Goths or the Calientes and make their lives miserable. That usually happens when I'm in a foul mood. :p
