"The world out there is dark, Enola. Far darker than Death Eaters cutting off your husband’s cock just to spite him. Tom Riddle has sired children to use in his own Dark Magic intentions. And who knows what they might be; a series of empty vessels to transfer his soul into when his own body gives out, perhaps ... or girls and boys created from his own seed that can produce super, inbred-children for his soul to inhabit in the future ... or maybe just powerful sacrifices, who knows. Voldemort wants to live forever ... but even he cant overcome the physical limitations of that.