"Let's split up and see if we can find the Doctor," you say.
"Sounds like a good idea," Fitz replies. So you do that.
You head off in search of the Doctor back towards where you came from. You find him by nearly running right into a Cyberman who has just captured the Doctor. The Cyberman turns and quickly shoots you dead.
Maybe you have noticed that splitting up is not usually a good thing. Try again.