Google Drive API Application Data folder, is it realy that difficult?

Google Drive API Application Data folder, is it realy that difficult?

I want to store some application data on the google drive, for example to
remember settings the user have made. Normally I will use cookies for this
or the localStorage of the browser but this is browser depended and
limited (storage size).
I google for some information about this functionality but didn't found
something usefull except the example of google itself. In this example
(found here: https://developers.google.com/drive/appdata) they explain how
to store some information. To me it looks more like sending an e-mail and
they didn't explain how to replace some data. Quite complicated if you ask
me.
I wonder why it must be that difficult to store a simple boolean, integer
or string like you can do with cookies or the localStorage object. I
doesn't have to know where it is located, just simple, you alter an
identifier and a value, that must be it.
Does have somebody an example that makes this function easier to use? I
mean is this the only way to do it? Does somebody has some experience with
saving appdata?