Smalltalk is ideally about finding a hook, a more interesting shared topic which can support a more fulfilling conversation. Otherwise, it's just killing time, and I daresay most here have more intellectually stimulating ways to kill time.

The complexity is when people regard a lack of smalltalk as a chilly isolation. I personally have been called stuck-up because I didn't engage in smalltalk at school. Some cultures are more oriented to this than others.