I'm paranoid that the key to my house will get a chip and no longer unlock my door, so I wanna just borrow my friends key to his house to unlock my door. It's a lock, and a key so it will work i presume.

I seriously wonder how and why things go through your mind. I mean that in actual curiosity. If you are not saving copies of your work and relying on the hopes that a backup copy can be stored on the actual device that stores the original file, then you really have to revisit your procedures. We save all remote files to dropbox. All of the company and tech computers have the dropbox file folder which backs up the files to each computer. We also backup to two local NAS drives in the office. So when that remote sh1ts the bed, a copy of the file is a stone throw away.