hey there PM .. 
well there are good people and bad everywhere … yes a child can get unfortunate and be subjected to child abuse by his foster parents … but at the same time , we have a few stories here in England , with a few Gay couples getting drunk and becoming violent on kids …
they are two seperate issues , child abusers.. can be anyone , gays, straight people, men, women … any one ..
you know what i mean ?
its wrong to think that a child will be safe with a gay couple … just because of their sexual orientation ..