Whether you think that it is credible or not, the evidence is all over the place. You certainly should be aware of some kind of evidence, even if that evidence is not credible to you. There are all kinds of adjectives used with the word "evidence", like "good", "bad", "solid", and so on. I do not accept the word "evidence" as meaning any particular kind of evidence unless the writer uses one of those modifiers explicitly. The implicit use of the word "conclusive" as a modifier is always inappropriate and wrong in my book. It also indicates what I believe to be the wrong attitude.
There is certainly no conclusive evidence that psychic powers do not exist. I've seen enough evidence that they do exist in my personal life. That evidence is hard to fit into a paradigm that tries to fit human emotion into some sort of numerical formula and assumes that "inanimate" matter does not feel. I also have difficulty with an immature science that tries to exclude everything that it cannot prove using what little it has.
Instead of dismissing metaphysical writings as not being evidence, it is better to read a variety of them and achieve a good synthesis of what they are saying.