I have no personal position on OSAS nor do I care to. I believe that we are sinners we will always sin because we are born into sin. You have commented multiple times on the fact that Adam and Eve sinned once and were thrown from grace. I believe that the reason this sin resulted in being cast out was because they are the only humans who were not born into sin. They had a choice of their destiny and they chose wrong. Since that day we will all be sinners no matter if we never sinned. For example, and many will disagree with me, a baby who dies I believe is a sinner, I also believe that God allows them to go to heaven since they didn't have the opportunity in life to turn to God. We were born that way and therefore we need the grace of God and the sacrifice of Jesus if we ever hope to be with God. I think Jesus continues to cover our sins once we have accepted him as our savior. I don't believe that it is a black and white topic. I think it lies in the heart of each individual, while I personally believe we are all destined to continue sinning, we are no longer defined by that term since we are now children of God. I believe that there are people who say they are christians that they are saved but continue in sin and are not truly saved. I believe that God changes our hearts as we seek Him and that as we grow in Him we will turn more and more from sin. I believe God judges our hearts and therefore he is the only one who can say that I am saved or you are. We can not say wether another person is with any certainty since we do not know their heart for God. I understand your viewpoint that God says things like go and sin no more and therefore we are to not sin at all. But in these verses if you look at the surrounding text I believe it applies to a situation not an overall command to humanity to never sin again. I believe that by saying we have the power (even if it is since we now have Jesus in our lives) to not sin ever again is belittling the sacrifice that Jesus made on the cross. We are weak, we are sinners, we will always be, Jesus just chose to cover us with his love and accept us as children of God, under his sacrifice. That is love that is beyond my comprehension. I think we are all blessed beyond belief to know God and to understand that gift, no matter the differences we may have.
In my experience, which is limited since I am young, when I fail God I feel terrible I don't feel worthy of the grace that he provides. My mind has a hard time wrapping around the whole concept because I am not worthy and I feel the need to not approach God because I am not good enough, but that is saying that his sacrifice is not enough for me, that I require more, that I can do it on my own, because I want to earn that love. It is something that I have come to accept that I can not do anything to earn this gift of love and that it is best to accept it for what it is and to seek him and try my very best to be pleasing to him, knowing that I will fail at some point, I am so glad that God has never abandoned me, and that he is always there to pick me up and continue to love me despite my complete unworthiness. That experience is soo humbling to me, and I think that by saying that we can choose to sin no more, one that would be deceiving ourselves and two would be denying ourselves that experience.
I am sure that it seems I am attacking you but that is truly not my intent. I simply hope to convey my opinion on the matter. I hope that you can hear what I say and really consider it, as I have considered what you have to say. God Bless.