Humans like sweet things because we are genetically programmed to do so. We could tell if fruit was ripe because it was sweet. We are supposed to eat fruit. Unfortunately, our taste receptors don't differentiate between other sugars and naturally occurring ones. Its up to our brains to regulate what we eat.
Michael, thanks for clarifying about how sugars are metabolized, thats an important note.
Lets face it folks, too much of ANYTHING is not good for you. You can die from drinking too much water if we really want to get down to it. Moderation in all things is the key.
You're only given a little spark of madness. You mustn't lose it. Robin Williams