I appreciate all higher states of consciousness. Just gotta be careful not to get stuck in them.
1) I have experienced levels of consciousness which rendered all human spirituality teachings as ridiculous. This made me disillusioned with all human spiritual teachings, because they are all wrong in the end. I can't be bothered to take human spiritual teachings seriously any more because that illusion has been shattered for me. I place very little value in anything spiritual that humans say. That's just where I'm at. With that said, as you say, for everyday human life those teachings are still valuable. Because the consciousness I experienced is impractical and even dangerous and antithetical to human life.
2) Ironically, it's the teachers who I am critical of who sell you on the fantasy of being invincible, or reaching some final state. I've sufferred a lot and faced a lot of limitation, so I appreciate how limited the human experience is. What I see is that a lot of spiritual people are kidding themselves. They have brainwashed themsleves with spiritual ideas and fantasies. Because in truth they were never thinking critically about anything. They were just lapping up what some guru was telling them. And then they fused those fantasies with their legit higher states of consciousness, thereby locking in the fantasy. But eventually life will shatter those fantasies. But they probably won't tell you when that happens.

I invite you to discover my new paper "How Self-Reference Builds the World" where I show how starting from self-reference as the entity with the property of looking-back-at-itself, all qualia, thus consciousness, can be obtained.
 
The paper can be found on my internet profiles, such as: https://philpeople.org/profiles/cosmin-visan