Maybe it's part of the "actual experience" that you don't feel depressed any more. The hallucinations, who needs those. Therapeutically what matters is the increased feeling of well-being that lasts for weeks if not longer.
And even the hallucinations can show you that we construct our realities in every instant of our lives. You know this already of course but knowing and experiencing are two different things.
also, unbearable sensory overload as the panic attack worsened, seconds took minutes to pass, and my kidneys felt like they were failing (they were fine though.)
the ego death was more or less permanent. my "self" never recovered, I had to build a new one. uncanny experiences of feeling like I wasn't my parents' real daughter, that my phone was a dead person's. I wasn't the same person. but this person is better than she was.
so.. worth it in the (years-)long run, but hardly sunshine and roses! bad trips are scary. 2C-E is known for being cold and analytical, but I'm sure you can have similar experiences on acid.
I personally think pearl clutching about the idea someone might have fun whilst benefiting from medicine is stupid and there's no reason psychedelics should not be available to anyone who is screened for potential contraindications, but there's no reason to assert that all of the different effects are inexorably linked.
But what if that is a consequence of the 'hallucinations' changing your perspective on things? What if the psychedelic break with baseline reality for a few hours is the trigger that changes things?
It's definitely interesting to try and understand. I also just react poorly to people trying to create 'useful' versions of a drug without the 'fun' parts. I don't dabble any more but the experience of compounds like these was well worth the time invested.
(I put hallucinations in quotes above because I think there's a difference between the psychedelic experience and something all-out hallucinatory, read erowid reports on belladonna, datura and brugmansia for the latter)