Now that the doctor has been a sexbomb of his own for several years (thus guaranteeing the hetero female and gay male audience) the companion provides balance and the sexual chemistry.
FORBES: Why 'Doctor Who' Needs a Male Companion
2.
Australia is also committing to achieve gender balance on Australian Government Boards by 2015 and establish a National Center of Excellence (NCE) to reduce sexual assault and family and domestic violence.