1) One’s logic is not the measure of the knowledge of scholars. If you are an expert, your opinion counts. You cannot change, unless you are changing from the less knowledgeable to the more knowledgeable.
2) If you are a mujtahed and have made your own research and concluded against the one you are following it is OK otherwise you are essentially disobeying God
3) It is not about how you feel rather, it is a subject that experts confirm through their knowledge