Why X gotta be Y?

Why X gotta be Y? is a fad phrase on CE, typically used as a response to topic titles. 'X' is a pronoun (typically "he", "she", "it", or "they"), and 'Y' is any grammatical modifier that the topic creator used to describe X.

It was repeatedly spammed sometime in late 2010, and has thus become moddable for disruptive posting.

Origin
Topic titles and posts that include any mention of race with the intention of describing a person—such as the words "black", "white", and "Japanese"—tend to cause outrages among many users of CE. Many CEtizens contend that there is absolutely no reason for such mentions other than to stereotype or offend certain groups of people, whereas others claim that racially descriptive words help to illustrate the situations more clearly.

Some users started to become fed up with the increasing frequency of these arguments, leading to the birth of the "Why X gotta be Y?" fad in either August or September of 2010. Nowadays, this fad may be facetiously used in response to not only race/ethnicity/nationality-related words, but also words referring to other demographics, such as females, gays, and 13-year-olds.

Examples
[Topic title: Today a black man stole my purse (I'm white)] TC: I'm not racist or prejudiced (I have black friends), but I get so angry at some people sometimes. User1: why he gotta be black? User2: why you gotta be white?

[Topic title: Japanese teen killed in Moto2 race] TC: The actual footage is heartbreaking... R.I.P. User1: Why he gotta be Japanese?