If you share a computer with your family members or friends. It is important to separate your user accounts on the computer’s operating system from them. That way you get things to run as per your preferences and customization; default browser choice, how the mouse behaves, your music playlist, and get to keep your private things, well, private!
However, the process of login in and then having to log out of your (say Windows) account, can be cumbersome. That is the reason why Google integrated different user accounts on the Chrome browser. While you don’t have to go through the cumbersome process of login out then someone else login to their user account on the computer. Chrome browser creates accounts for each user within the same Windows user account, and it brings along all your browising history, bookmarks, and passwords.
Though each user maintains their separate online identity. The best thing about Chrome user account is that you can change from one user account to the next on the fly. Just a few click and you are on to your profile, another click and a few click …read more
Read more here:: How to add another User Account to your Chrome browser