Editors are essential. any writer that doesn’t see the true function of a really good editor is a narcissist. is every editor made a equally great cloth? No. but there are many great editors working in this business and every one of them has helped me considerably. they are sounding boards, they are a voices of reason, and for those of us who can’t spell or construct a sentence :-) they are essential.
a really good editor is someone who has your back and wants the book to be successful. they want you to put your best foot forward and will do anything they can to make your vision see the light of day.
who doesn’t want that?