There are so many Linux distributions that choosing one can be overwhelming for a new user. One might be too intimidating for a user to even try, while another might be too simplified, blocking that user from knowing how Linux systems actually function.
I have been using Linux as my primary OS since 2005 and have tried all major (and quite a lot of minor) distributions. I have learned that not every distribution is for everyone. Since I also assist people in migrating to Linux, I have chosen the 5 distros that I recommend to new users based on their level of comfort and desire to learn (or not learn) more about Linux.