I guess they can be a nice tool to help with various mental conditions. Years ago tried shrooms twice in low doses. Was a nice experience, could feel a certain connection with all living things, but wasn't tripping balls.
I do believe that psychedelics can be beneficial just as much as dangerous for the human mind. Handle with care. Don't go full retard.
Not sure about legalization. Some things shouldn't be easy to get, but I don't support harsh punishments.
Also: I do believe that all insights that one might get from psychedelics can be acquired by other means like long walks or hiking and meditation.