I didn't do any "survey", what I said is based on my personal observation. We do have an extensive CD/DVD cabinet with software, which is incidentally in my office and nobody ever uses that, because all important software is stored as img files on our server.
My imagination may be limited, but its at least healthy. I have hard time imagining that a sane person would carry around a bunch of bulky, unpractical, easy-to-damage and most importantly SLOW optical disks when they can simply get a fast external HDD for more or less comparable money.
You say that many people still use optical media. But enlighten me please: what exactly is a justifiable modern use for an ODD, aside from reinstalling the OS? Yes, optical media has had its application in the past, but any of the common uses (backups, data archivation, data sharing) simply does not make any sense, neither practically nor economically, in the age of cheap external drives, fast internet and flash memory. And if you are someone who has to print optical media for living, such as doing audio CDs (do these things still exists??) or similar you will be using industrial CD-baking machine anyway.