I always found it annoying growing up to read "he" everywhere. I admit, it did make me feel left out because I felt that whatever was being said didn't apply to me, as a girl. I am a feminist, have been most of my life. In school, I did use "she," as a representative pronoun, mostly because I wanted people to know what it felt like to be excluded in that way. By the time I was in grad school, I opted for alternating he and she in order to be fair. I clearly remember thinking, when I visited my first woman doctor (a neurologist), that I didn't know women could be doctors. I grew up wanting to be a doctor, because women could. Anyway, I don't want my daughter thinking she must grow up to be a certain thing, if her true heart's desire is to be something else. So, at the very least, we alternate. But we might just use "she," too. ;)