I do think it opened a lot of doors for me and it has caused me some trouble that a lot of them tend to stay open and I have to deal with things more consciously. I believe it has attributed to my hypervigilance for instance. But, I must also say that I am predisposed to some mental abnormalities and disorders and have had periods in which I tripped way too much and was very vulnerable. Also before I ever knew it was possible I had a profound ++++ trip that changed my life forever and it was traumatizing in ways as well as liberating.
So all the wealth it has brought me came at a price, also I have gone too far with it in periods where I tripped at least weekly on acid or more... and my other substance abuse also messed things up. But I do not see psychedelics as a gateway drug at all, if anything they help me get some perspective and put some sense into me and I believe they played a role for me eventually stopping my periods of problematic use. I abused quite some stuff but I also quit them at some point without external help.
Psychedelics can heal and they can traumatize and devastate - their extreme potential can go either way, a source of power that can catalyze good, healthy and wholesome processes but also pathological processes like paranoid delusion, obsessive-compulsive behavior maybe, and who knows what else. So in the end I think of them as neutral but with enormeous potential and it is up to the user to provide a balanced state of mind and proper set & setting. That way the result will be the expansion of that set & setting.