We are told that in the resurrection man will be as the messengers (angels), neither marrying or giving in marriage, but that DOES NOT mean we won't have the ability to sin. We are told in scripture that angels have that ability, so the theory that we will be "glorified roboti saints" really leaves a lot to be desired.
We must stop underestimating the potential we all currently have to live WITHOUT sinning. Remember, WE ARE CREATED IN THE IMAGE AND LIKENESS OF GOD! The fact that we sin is a reflection of poor decision making NOT because we are "only human."
We will be higher than angels therefore our sin nature could be removed. To me, having no sin nature and being around others who have no sin nature would be paradise.