The commandments and beatitudes might be relatively few in number--but that is because they are general principles upon which we are to derive  appropriate actions for specific circumstances.  

The Bible cannot possibly speak to every circumstance we may find ourselves.  The teachings of Christ and the commandments he gives, however, are sufficient enough that we can derive what the proper moral action is in a specific circumstance.  

Your statement, therefore, is true but misleading.  It is misleading because it suggests that God expects little of us and isn't really concerned with sin.  God expects much of us and is not about to ignore our sinful choices if we are not repentant.