Concept question about push/pull stashes

Hello,
my question has to goals. I want to understand the design decisions 
behind a (missing) feature and and wan't to explore the needs of other 
users before I start to implement something.

There is no usual way to exchange stashes with other repos/users. 
Stashes are code snippets that are unfinished and not clean enough to 
commit them anywhere not even in another branch.

Why? What is the concept behind this? I am sure this was well thought. I 
just try to understand.

A feature like this is often asked by users when you asked the search 
engine of your trust.

One workaround is to simply commit the stashed code, push/pull it, 
checkoutit into the other repo and delete the last commit.

The other workaround is to create a patch-file from a stash. But then 
the question is how to exchange this file?

Why not use the git infrastructure itself?

I have workaround in my mind. I couuld use a script wich creates patch 
files for each existing stash and commit them into the repo. Thats all. 
To keep the repo "clean" the path files could be archived into a hidden 
(dotted filed) tar file. Or the tar file could be stored inside the 
".git" folder if there is a way.

I am interested in your thoughts about this.