As somebody who never took a statistics course (but had to teach a few classes on it), I wondered why is the histogram introduced in a statistics course? Usually when something is introduced in a "watered-down" way, it is important in later more advanced treatment of the course. The undergraduate course never motivates why.
My reasoning is that, if we have a random variable, $X$, we can estimate $P(a\leq X\leq b)$ by counting how often outcomes appear in a certain interval. The smaller the interval the better. Therefore, the point of the histogram is to "piece-together" information for the distribution of $X$, which is ultimately the goal of statistics. Is this the main reason?