I never used Windows 3.1 but I can sure remember buying software that still came on floppies. Our first PCs at work didn't even have CD drives, which made it interesting when you needed to install or reinstall, say, MS Word or Outlook or the software that made your printer work, all of which came on CD.
And I can still remember the HDD on my first work computer... it was a whole 1 gigabyte!