On the other hand it can result in permanent personality changes / dissociative identity disorder.
LSD does cause permanent personality changes. That's what makes it such a beautiful compound. For me, it permanently altered my openness to experience, made me more intuitively empathetic, and improved my communication skills (the last two are two sides of the same coin). As a result, I am more well-adjusted, better able to communicate, more in tune with people's unspoken emotions and better at dropping into that unique state of vulnerability that we often call love. *
Your mileage may vary.
* Actually, psilocybin mushrooms were my first psychedelic so I credit them with that more than LSD per se. LSD was like the icing on top, really.
I find it difficult to call someone well adjusted when they are dependent on a hallucinogenic drug to cope with reality.
I’ve seen the damage that drug addiction can do, so I understand your caution. But they are nothing like addictive depressants or stimulants. The drugs are actually somewhat unpleasant while the effects take told, and you feel better from the after-effects when they wear off. You also get a lot of tolerance after a single dose. This means that the compulsive redosing behavior that leads to dependence simply doesn’t happen.
Furthermore, this is more of a matter of opinion but I strongly feel it doesn’t dull your senses / decision making / cognition the way alcohol does.