I think the answer to a good marriage is simply being able to accept your partner for who they are, and finding someone who can accept you for who you are.
Also, we are human and we take any situation or person that is not constantly changing for granted. Hell, I even take my kids for granted. I think it's inevitable or it takes some real spiritual awareness to not do that.
Your perspective has been extremely helpful to me btw and if husband and I do ever reconcile, I feel like i will have you to thank. ( I just initiated a superficial text conversation that he reciprocated to)
Me: 42 H: 43 Twins age 5 Physically Separated 7/2015