Never look back, only forward.
For most people life does not end with a divorce. Rather, it is the beginning of a new life upon which you (hopefully) have gained added knowledge. Perhaps you have learned from past errors, mistakes in judgments, fears or mistrusts, which may have existed in your marriage.
This knowledge should lead to “insight” which can be used to build a firmer and more lasting relationship, or perhaps, even as an aid in making the choice that for you, no permanent relationship is the best course of action.
That choice, if it is made, is as valid as a choice made by another person to remarry.