I know that a black hole doesn't suck things into but with you hypotis there would deffenitly be some effects to our sollar system if all of a sudden there was no sun or any solar energy in the form of electo magnic waves and solar winds coming off many things like astroids in the astroid belt between us and mars would be effected by that( solar energy pruduces force on an object somthing like 2 newtons per square mile/ didistance) the lack of that pressure could send some bulk in the form of stray astriods twords the black holes and theres one thing about black holes they only get stronger. true it make take a looooong time but to say theres no effect in my oppenion is false.