Pros and cons of groupfolders - can I undelete?

I am confused over the usage of groupfolders. The alternative that I use is to have one “dummy” user for each group that creates the folder and then share it to the group.
I can understand that groupfolders can use advanced settings to define access to subfolders. One important negative thing is that deleted files cannot be restored?
If I do not need to define selective rights to files and subfolders, are there any other advantages I miss?