> Do you actually ever need to open a new editor? Why not just start whatever editor you want when you boot up, and then open files in it?
Speaking only for myself and not the GP: due to a lifelong habit of putting things away when I'm finished with them, I always close windows and quit applications when I'm done using them for my current task.
> You probably don't shut down and start up your web browser every time you want to open a new site
Not literally every time I visit a new site, but yes, I quit my browser every time I'm finished with my current browsing session, even if I might end up launching it again in 10 minutes for a different reason.