Psychedelics are very good for opening the mind, effective especially against dogmatic beliefs. They beat down the ego and show you how much your thinking is normally clouded with unnecessary thoughts, and judgements.
DMT in itself is an extremely intriguing substance with loads of ideas and theories that go into it.
Personally, I think that DMT heightens your senses and your brain activity so much that it goes haywire and unleashes it's full, raw potential.
The effects from these psychedelics are coming from within, the psychs merely trigger it. So for me, if I were to put DMT to use it would be to help investigate what my mind is, and in turn, what reality is. For a truth seeker, it's highly valuable to check out.
