Is Doctor Who basically just a series of unhappy endings?

Doctor Who is a show about a dotty alien who travels through time and space with a neverending series of human friends. And the most important thing about those humans might be that they always go away, in the end. Some of them die, some of them marry aliens that they just met a few hours earlier, some of them get… » 9/23/12 9:30am 9/23/12 9:30am