Why do I have to put a check in the box labeled "Remember me" ? Who would consciously want to log in every time instead of just being already logged in ?

I do computer maintenance every Saturday which, somehow, disconnects active logins so I expect to have to log in every Sunday. Unfortunately, at this site, I inevitably miss checking the "Remember Me" box and then, often times I forget on Monday, as well, even Tuesday sometimes.

Does anyone find a need for the "Remember Me" box ?