Funny, the whole point of restarting for me is either "my battery ran out and I need to boot up again after plugging in" or "I had to install software updates", and it's a total pain in the ass to lose all my tabs and stuff when that happens.
If I just wanted to close all my open applications, I would just close all my open applications.
If I just wanted to close all my open applications, I would just close all my open applications.