What I have found is that the people on this site have various different views about this issue. Some are extremely hostile to following anything outside of the Quran for spiritual guidance, as in their view, it constitues shirk, while others are opposed to only those teachings which in their view are harmful teachings. In any case, I feel that everyone has the right to believe what they think is right, as long as they don't use their belief as a justification for taking away the rights of others to practice and believe what they want to believe. I don't believe in calling people with different beliefs as Kafir, Mushrik, Munafiq, etc., nor do I support the killing of the apostates or blasphemers, because it goes against basic notions of decency, tolerance, and respect.
The quran calls people Kafir, Mushrik and Munafiq. The companions of the prophet peace be upon him did the same. When you have crossed the line of islam, your a kafir, thats it. The islam is not a game where you can play with all kind of beliefs. there is only one way, and thats the way how the prophet presented islam.
The prophet peace be upon himself declared war to so called prophets. The first khalifa did the same. Abu Bakr as-siddiq fought against those who refused to pay the zakat. Imagine what would happen to you people. Most of you reject the way you have to pray, the rituals of the hadj, rules of zakat, the fridayprayer, rent etc.
There are certain fundamentals in islam. These fundamentals existed in the time of the prophet until now and these have always been the same. (differences in fiqh is other thing). But you change the rules of islam when there is absolutely no difference of opinion.
I guess i'll see you in hell.