Guys have to play as a lady about, what? Maybe 2% of the time.
Girls have to play as a guy about, oooh, 90% of the time.
For woman, playing as a character like themselves is a really refreshing change.
(Numbers are pulled out of my ass based on years of playing games; the missing 8% are games with multiple character options that include a woman. If you're lucky there may even be two or three female characters to choose from out of a cast of about a dozen!)