Excellent analogies and points on chemistry vs. compatibility! The only one that I take issue with is family involvement. I have experienced and have seen this quandary in other couples. Often extended family are too heavily involved in marriages that are not personally theirs. Unless they absolutely know of things that are detrimental to the health, welfare, and safety of the individual, they should step away from the situation. They need to trust that they( if these are parents) properly raised and taught the person the basics of life and making decisions. We all will stumble many times in life, especially when it comes to relationships, but we need to be allowed to experience those glitches and grow from them hopefully. Too much outside interference will stunt that growth!