If you have large files on your computer and you do not want to remove them, then you need to find a way to deal with all that space that they are using. Large files can be anything from animation files, CAD files, movies, videos, photos to documents.
Most people when they think about creating more space for their computer automatically think that the files need to be removed. This can be an easy fix, but it can also be a huge inconvenience if those files are needed or are used often.