Dear nekomon,
I have had similar feelings along the way. It could be because of seeing of feeling examples of so-called Reiki being mis-used or mis-guided. To me these thoughts or feelings are a call to the importance the Mindfulness aspect of a Reiki practice (Reiki practice of any sort or 'level') and the guiding importance of an ethical mindset that is not Ego influenced.
Those two things are no small order. For many it takes years to understand the concept(s) let alone weaving them into one's being.
namaste,
Michael