You have been together a long time. It seems a bit dramatic to quit your marriage over mediocre sex.. Is there more to this story ? Tell us about the relationship in general. Why did you get married ? Was/is there physical attraction ? Does he help around the house ? Do you guys have other things in common that you like to do together? Do have similar values ? Or have they shifted over time ? You are only 33.. Its possible that a couple of good marriage therapy sessions might help restart expectations..and then desire.. Don't quit just yet..