We need to tell people what it means to be human. However by the end of Genesis 11 society is totally corrupted by the effects of sin. We have a foretaste now in the Church. It is God's redeemed community. Like a beacon, it should show it a decaying and fragmenting society what real community looks like, when it is correctly joined to its head - Christ.
Christians are also aware of a struggle internally.
However the Bible reveals that the true cause is not a language game but our old nature. There is a battle going on inside, a battle that Christ has decisively one for the Christian, but one that still rages nevertheless. We yearn for the fullness of our salvation. God has put eternity in our hearts. As a result we set our hearts on our hope - that we will be with Christ forever in Heaven, when the battle is finally concluded, and sin is expunged.