It has nothing to do with dishonesty-and everything about understanding God's will/promises, of His purpose and plan for man. To be convicted of sin, to admit that we're worthless wretches, unable to be righteousness, is the first step in conversion to our Lord. It's the first step in being sinless, just as admitting ignorance is the first step in gaining knowledge. But to continue to repeat this, as if it's some kind of noble thing to do is not much different in the end from the Pharisee in Luke 18:11.
At some point God is saying, "Ok, ok, I know you're a sinner, but let's get past that point now. I didn't do all this just so you can remain a sinner-I never created you to sin after all. I've had a purpose and plan for creation from the beginning-to perfect it even if that involved a Fall early on. We're learning something here-that falling and sinning is bad, wrong, useless, not worth it-earning nothing but death. I didn't send my Son merely to win forgiveness for you but also for you to be enabled to "go, and sin no more". I want you on that path-a path I've made just for you. And I'll continue to walk with and work with you on it; I'll pull you back up if you slip and fall now and then as long as you care, as long as you strive. Then at the end of the day only I, your God, will give you a just judgment as to how well you walked that walk with all the grace I gave.
But I will, as I promised, place my Law in your mind and write it on your heart. Jer 31:32