Nkrs
That's too much. My Linux install is just under 10GB with all of the software that I use (Matlab, LibreOffice, TeXworks + a lot of packages, various compilers and browsers, some graphics software like Inkscape and QtiPlot), and even that's a lot. In contrast, my first PC was a Pentium III Dell machine which had a 10GB hard drive, and I had lots of programs and games installed with plenty of free space on the disk.