My experience has been that people who are black, Hispanic, Pacific Islander, and some Asian ethnicities use them pretty much constantly. My Japanese, Chinese,

My experience has been that people who are black, Hispanic, Pacific Islander, and some Asian ethnicities use them pretty much constantly. My Japanese, Chinese, and Taiwanese friends generally just use the yellow ones, whereas my Indian in-laws use skin-tone-modified ones. Maybe you're just not interacting much with non-white folks in a context where emojis are used frequently?