We hammer the broader side of nail and not its sharp end to put it in wood. Why?

When we strike the hammer on the broadside of the nail it absorbs more force . This force is transffered to the sharper end where the are is less.With the force being the same and area being less, the pressure acting on the wood will be the maximum(pressure=force/area) The more the pressure, more is the extent to which the nail enters the wood.