One way to logout is to press ^D (which sends the eof signal) at the shell prompt. Since you might do this by accident, you can tell the shell to ignore the eof signal. Why is this not the default?...

One way to logout is to press ^D (which sends the eof signal) at the shell prompt. Since you might do this by accident, you can tell the shell to ignore the eof signal. Why is this not the default? What does this tell you about the type of people who use Unix?