Look, Hadith are supposed to be the words and deeds of Muhammad -it's not unlike the Bible, the two main branches of Islam have their own collection of these "words of wisdom" that they follow. It doesn't matter in what format they are and who the author is. Just like the Bible, just like Mein Kampf, just like Lord of the Rings, you cannot be said to follow the Hadith or follow the Bible just because there's always something in them you can find which you'll agree with. The collections represent something as a whole, they are not just the sum of their individual parts - just as the Bible represents something.
You cannot say I follow the Bible anymore than you can say that a Muslim follows the Bible, yet we both probably agree with parts of it. The Bible isn't a single piece of work either.
I'm getting tired of repeating myself. If you reduce the "follow the Hadith" statement to such a degree that even agreeing with a single idea makes you a follower - even though you strongly disagree with the rest, than it's a useless expression. It's useless for the Bible, it's useless for Mein Kampf, it's useless for the Communist Manifesto and it's useless for The Lord of the Rings.
You can't compare the Biblical canon with Mein Kamf or Lord of the Rings or any modern works like that. Those had ONE author, and are a single, completed whole. The Biblical canon is a small library of works, and is made of several parts of wholes. Think of the Bible as like a "best of" collection rather than a single whole.
I think of the Hadith (which are numerous in number and therefore not single works) as the Book of Proverbs. You can agree with some proverbs and not agree with others. You can read one which says something you hadn't thought of yet, but find very wise, and start following it.