Linuxsucks

That is a neat idea. You can implement this change in vim (or the editor of your choice), and open a pull request to contribute it if you wish! Another idea would be for the editor to automatically re-open itself with escalated privileges, maybe caching your changes to a temporary file so that you do not lose anything (could be dangerous if editing sensitive data that shouldn't be written to a temporary location, or if you didn't understand that you were opening a system file that you should be cautious in [but I can think of ways to mitigate that problem, too! Like just notifying the user that the editor needs to escalate the privilege]). I think it is important to realize that none of these solutions are the responsibility of the operating system itself, but instead the programs that you are choosing to use (Notepad/vim)

Modern versions of vim do warn the user up-front when they open a readonly file for editing, which I think is a nice solution, but sure, it doesn't explicitly offer to save the file in your home directory for you. This is still always an option though (:w ~/myfile), and if you don't know how to use your text editor to save a file and need that level of hand-holding, then maybe you shouldn't have sudo access in the first place?

This is simply not true. Try it. I just did! File opens in notepad but when you save, you get an error. It does allow you to open the file without write permission because you have the option of saving it to a location where you do have permissions. Just like Linux 🙂