It's cute but not necessary all the time. Most games use females as love interests or supporting characters. I enjoyed Final Fantasy X's love story with Tidus and Yuna, but I got extremely excited when Final Fantasy X-2 featured an all-female lead cast. Something about playing as a fierce and strong woman makes me want to play more games with female protagonists. The love stories are great, but they get old. There are just as many women gamers who are ready to see female characters take the lead.