Humans crave the unknown to explore defiance or fill in the gaps of uncertainty in the human mind; the benefit of changing an unknown to a known is usually evident, for instance, a new restaurant or such other interesting stuff. Many years ago, discovering a new land meant you could rule it yourself! It’s also due to brain chemistry, and the desire to seek meaning, and discovery is one such meaning. However, the unknown can also be scary: one factor is "stranger danger" conditioning to kids, even though domestic abuse is more common. The status quo bias also thrives again in that there is much less risk to the familiar, if the goal is to avoid harm. Still, without the unknown, there will not be any more known so it is inevitable to some extent that humans HAVE to crave the unknown, right?
The more you want to stop craving something (possibly due to stigma), the opposite occurs more often than not. Or perhaps society stigmatizes the most pleasurable stuff as to bring pain to darwinisms of man: social media, sex, doing nothing by sleeping...
Drawn to uncertainties when they want to discover unknowns. It is basically a risk-reward weighing; when the risks are too high, avoidance occurs; when the opportunities are high, chasing occurs, and vice versa. Craving is linked to wanting to self-actualize, discover more, and ancestral hunting for resources (more food, better survival chances)