this is such a good question

surprised I never thought of it

but it seems like "bad" people tend to steer clear of psychedelic drugs

This title reminds me of myself. I once went to a place where I sought power, I desired to become a occultist with the strength to enslave the masses. I was young and in a state of chaos, I had no good intentions and the denizens of that place seen my intentions as I did not hide them.

Still they invited me and in my foolish arrogance I thought I had deceived them. But the fool was myself, for the path that I would follow to gain this 'power' changed me, my intentions, my desires. After 20 years still I am most deeply allied to this way because of the wisdom that it gave me. It turned a dark man into a decent man.

The way to understanding holds a power to right the perspective of those who follow. Regardless of intentions at the onset those views change when the greater picture evolves. I like to think of it as evolving. Not matter who you are you can grow given the proper fertile soil.

I believe one can get what they want from DMT.
Or what they subconsciously need.

I know on LSD and other psychedelics that if i have a dark trip (bad trip) or get stuck, it is because of something going on in my life that i have not been able to sort, and after a tense bad trip it seems to lessen that topic or bring it surfacing easier to sort?

The dark can only be ENLIGHTENED.

I have had similar journeys and ENTITIES* on SPICE but they always change in time.

No one or nothing is inherently bad in and of itself, however there are misguided creations and misguided individuals. People are vulnerable to being misguided by dark spirits and even spirit possession.

"They" as in evil entities in hyperspace?