@Duckey Coffee is normally a very hot, bitter thing, which are things that most kids do not care for, preferring cool, sweeter things. As one grows up, one's tastes change, and they start liking more bitter things.
Of course, everyone's tastes are different. Some love bitter things even as a wee toddler. Others never grow out of having uncontrollable sweet teeth. But it's a common enough thing to be a good generalization.