There are a lot of low-IQ people out there who assume that if someone plays a character of another gender its for perverted/deviant reasons. They never consider personal/stylistic differences.
I'm a guy, and half my toons are female. I made my belf pally female cause I didn't really like how male belfs looked, my warlock is a belf female cause I prefer how cloth looks on female toons rather than male and my monk is a female pandaren cause IMO the males were too bulky for the character I imagined.
In WoW you are playing a character, not necessarily yourself. Your toon doesn't have to approximate your real-life self.