You know what I find strange? Some years back when Final Fantasy XIII was announced to have a female protagonist, a bunch of people refused to play it on the grounds they don't want to play as a girl. The gaming community in general treated them with scorn. But when the topic comes to Witcher, I've seen dozens of people say they refuse to play as a male. Curiously, I've never seen any scorn at the exact same concept with the genders reversed.
I know i've had these discussions before, and the usual argument is that "you can play as a guy anywhere, you can only play as a woman in select games!" which whilst hyperbolic, does have a modicum of merit. There are more games with male protagonists than there are with female leads, though there is hardly a shortage of the latter. Then you get the people who take it even further, who apparently only play games where they can play as a gay/bi character of their chosen gender, I doubt they actually do, otherwise they would only play Bioware titles and (quite literally) a handful of others.
Then you get the "I just can't connect/identify with [X] characters" arguments, which is simply a case of lacking empathy, which is why I refuse to accept it as a legitimate reason to avoid something. As this problem is with the person, and not the game/character.