Seriously, why is sending a file or blob of data not a better, easier experience? You have to attach it to an email, often with pretty limited sizes and/or number of files. They then live on in my email history.
I want to be able to send files to someone (often myself) or to a specific computer (again often to myself across the room or building). There is a need for this, and things like Dropbox and cloud storage are trying to address it, but it should be a more core function to computers and be simple, and secure without third party opportunities for failure/obsolescence. You can use sharing of a drive/folder, but often I am only sharing to get the file across and for no other reason and would prefer if it was a direct action to see the file arrive with a notification and click accept&save, rather than a passive one where it shows up silently in email or a shared folder.