Yes you are right but not. In my opinion we are still sinners but we are blessed with the Holy Spirit which helps us to commit less and less sin as our walk as time goes on. At least that is how it has worked with me but there are times when I sin without checking myself before the sin was committed and that is when the Holy Spirit convicts me and that is when I have to forgiveness. In the book of Job he is sacrificing on behalf of his son because they might have committed sin in their hearts that they might not have realized. I could be wrong about that interpretation but that is what I got out of that scripture and I believe that there are times in my life that I might commit sin in my heart without knowing it so I ask for forgiveness for sins I might not have realized that I committed.A couple of points massorite. Most of my life I lived as a traditional Christian in my dysfunctional family. None of us went to church but the matriarchs hung scriptures on the walls. About the only time we prayed together, or at all, was at holiday meals. I think God accepts those prayers of thanksgiving. Like you said God hears all prayers. My thoughts anyway.
I am like you, I would not invoke the name of Christ or ask God for anything unless I were living for Him. My second wife didn't view it like that. Trying to reconcile our different views of God, eventually led us both back into His arms.
Regarding the OP, it is mostly how we view ourselves. I said in an earlier post that God view things across time and space because He can. Scripture suggests that we speak and think just like Him. So, in God's viewpoint we are not sinners. Shouldn't that be our viewpoint also?
Job 1:5 And it was so, when the days of their feasting were gone about, that Job sent and sanctified them, and rose up early in the morning, and offered burnt offerings according to the number of them all: for Job said, It may be that my sons have sinned, and cursed God in their hearts. Thus did Job continually.
You are right about how God views us. When God looks upon us He see's nothing but the shed blood of Christ. Therefore He see's our righteous because of the shed blood of Christ.
I don't look down on myself because I am a sinner because I know that I am a child of God who is always under construction.