I don't know about anybody else, but when I sin my conscience lets me know I have missed the mark. I confess my sin(s) immediately, because if I don't that opens the door for the devil to try and bring sickness, and death upon my body. Besides, I would much rather repent than to have my Heavenly Father chastise , and correct me for my wrong doings. Did you ever notice, you don't have to ask God the Father to correct you when you been bad, as he does it whether you want it or not, just like any good parent!! As the scripture says, "If we would "judge" our self we will not be judged"
1Co 11:28 Let a person examine himself, then, and so eat of the bread and drink of the cup.
1Co 11:29 For anyone who eats and drinks without discerning the body eats and drinks judgment on himself.
1Co 11:30 That is why many of you are weak and ill, and some have died.
1Co 11:31 But if we judged ourselves truly, we would not be judged.
1Co 11:32 But when we are judged by the Lord, we are disciplined so that we may not be condemned along with the world.
The whole purpose of the Lords table is to bring to our remembrance that Jesus shed his blood on the cross for the forgiveness of our sins, and that in his body he bore our sins, and that by his stripes we have been healed. Confessing our sins, and thanking the Lord that he took upon himself our sicknesses because of our sins, so that Jesus brought healing, and forgiveness.
This is why it says in verse 30, " That is why many of you are weak and ill, and some have died."
I am not ready to die, or get sick for unconfessed sin(s) that the enemy will surely try and bring if I leave that door open to him.