"Everything we do is for the purpose of altering consciousness." I very much respect Sam Harris for taking the consciousness problem seriously. It poses a real problem to (his) atheism, and he, obviously, rejects the substance dualism, which would logically lead to a religious view on us. However, without a conscious soul, meaning itself loses meaning. What's the ontological support for meaning to rise on? One thing…
Theism hardly solves the problem of consciousness. It shuffles the question onto a deity without actually answering it.