Logic vs Emotion

Head versus heart is one of the most common conflicts any human being will probably ever experience. It's simply the curse of having both a brain and a conscience. And this conflict can be as simple as "My clothes are getting tight but I really want those chips," to, well, "I've created a monster that will kill everyone I care about unless I agree to make another one."
   That's quite a range.
   So! How to decide?
   Well..... you can't, really. There is no textbook example of when your head or your heart is right (which is what makes these dilemmas such a fascinating story element, by the way). I think it's safe to say that in most day-to-day instances it is best to follow reason, because the emotion part is generally dealing with some short-term benefit. Those chips may taste good, but the taste will be gone in ten minutes tops, and your jeans will only get tighter. But who cares about these dull, mudane problems? Let us pick apart the latter example:
   If Frankenstein makes the decision and denies the monster's ultimatum, then he will see his entire family die. If he agrees, he'll be releasing another monster into the world, which is simply too unpredictable a variable for Frankenstein to consider. Just take a look at that. Having difficulty deciding which is rational and which is emotional, yes? I think we can agree the emotional decision would be to create the second monster, accepting the new risks in order to save what's left of his family. The rational decision would be to deny the creatures demands, resulting in the death of his family but resulting in fewer risky variables.

~Companionship

Humans are social creatures. We evolved/where created (take your pick) to be surrounded by others. This is why people on deserted islands go crazy, and why prisoners sometimes get attatched to inanimate objects, and why there is a Companion Cube in Portal. This is also why Frankenstein's monster became a heartless murderer.
  One reason we love company so much is because we can communicate our feelings with them. Sure, you can talk to your pencil/computer/companion cube all day long, but it will never actually respond, which takes the fun and instinctual satisfaction out of it. (although if it does, you might want to satisfy your need to communicate with one of those people dressed in long white coats...). Talking to others usually helps us better understand our emotions and act accordingly. When we are deprived of this, our emotions become a jumbled, nonsensical mess that is difficult and sometimes painful to sort through.
   One more reason why we need fellow people is love, because we don't just have a natural urge to find a mate and reproduce; human relationships are more than that. It's difficult to state exactly why we need this so badly, but I think we can all agree that a person who goes their entire life without ever experiencing love wouldn't be very happy, yes?

"The symptoms most commonly produced by Enrichment Center testing are superstition, percieving inanimate objects as alive, and hallucinations. The Enrichment Center reminds you that the Weighted Companion Cube will never threaten to stab you and, in fact, cannot speak."