It disturbs you because everything I've read shows that it can be significantly dangerous. I've attempted it many times, and the most I've achieved is just feeling "at one" with everything around me. That only occurs because I stay in one state for a long enough time that my body actually becomes naturally accustomed to the unchanging sensory input. In layman's terms, it's like wearing a glove for a long long long long time; eventually it feels like your own hand.
My desire to perform this is purely one of exploration & enlightenment. I don't believe doing this will help me become a better person or that it will unlock my "true self." If, however, I can do this, I'll be able to get into most places without fear of retaliation or violating any law. I'd have to keep any maliciousness out, though, as that would make me a weapon against myself. I wouldn't be surprised if our military actually uses astral projecters to look into dangerous places.
Anyway, I haven't attempted this in a long time because I've already tried too often without success. Should I find someone who does have experience with this, I'll definitely look for guidance, but this is on hold for now.