Are you kidding me? Have you seen how many STRAIGHT parents beat the hell out of their children? Do you have any idea of how many STRAIGHT fathers molest their daughters?
Being gay has nothing to do with the propensity to abuse children and if you feel it does perhaps you should get over your prejudice and meet some people who are gay. You will find that they are like any other human beings on the face of this earth, some lovely people, some assholes. Geez.