Why is the smaller 'Nanotechnology' better than anything before?

An Atom
http://facstaff.gpc.edu/~pgore/PhysicalScience/atom-with-electrons.gif

Nanotechnology is a useful science it gives us the capability to build structures 'atom by atom', which opens up the possible creation of never before possible devices (Refer to other pages for a more in-depth study of these new devices).  This new ability is destined to have an enormous impact in almost every aspect of our lives, foregoing any possible creation built on the larger 'micro scale' (which is only one millionth of a meter).

B.B