Why use FreeMem frequently?

Freeing-up memory is as important as defragmenting your hard disk. Both is most important to boost your computing experience. Defragmenting your hard disk makes sure that your data is accessed in the most efficient way. Freeing-up your memory makes sure that the hard disk is not accessed while loading this data. A swapfile access during a file-load has the same effect as a fragmented hard disk. And you do defragment your hard disk, don't you? Why not activate the turbo-option for your memory by using FreeMem?