I would argue that even in a ranking topic, unless you're the only contributor and it's for a wide audience, then subjectivity will make a better list than objectivity will. Especially in something like the ranking topic we have here, where the whole point of value is a score gained by averaging multiple subjective valuations.
The one place where I would concede that striving for an objective valuation of a game has merit is something like a review. Where you are attempting to not so much determine if you like a game, but if someone else might like a game. At which point you need to be able to see it from a viewpoint outside of yourself. It is still a fundamentally flawed method of doing things, but still the best method in spite of this.
