OK, in a way we all have a "computer career" to take care of our home systems. It's a new month! Back up your important files! I think every single person I know has had some sort of a catastrophic data loss at least once in their life. Usually it's because they put off doing backups until "later".
If you do it on the first of each month, it is quick, easy, and it gets done. So do it today!