== How long do you want this page to be exactly ? == 

 Planet X orbits Star Y's habitable zone. Planet X might have moons. Star Y might have other planets. Therefore something orbiting Star Y might possess extraterrestrial liquid water. There are far too many examples of this sort of flawed logic on this page. Not to mention that this criteria is so loose that it could literally be applied to billions of stars in the Milky Way! We'll end up with a page that is infinitely long ... Putting the candidates in a list page makes sense. Its the way just about every other article in Wikipedia works. I get the feeling some Wikipedians just resist change for the sake of it.