The U.S. National Longitudinal Lesbian Family Study asked 17-years-old girls and boys with lesbian mothers if they were abused by their parents and their answer was "NO".
In a family with heterosexual parents, 26% of children report being physically abused, which represents one quarter of American teenagers, and 8.3% are victims of sexual violence, it's still thinking.
Many countries do not allow adoption by same-sex couples and many people say that a child cannot grow normally with lesbian mothers or gay fathers!
Moreover, when countries considering adopting by same-sex couples, it employs specialists of children, child psychiatrists, ... without ever asking about the adoption by heterosexual couples.
Photo credit: Gigi Kaeser