In the long run I'm glad I had the experience because it brought a lot of my anxieties etc to the fore and forced me to deal with them in the months following the trip; while it was truly terrible at the time, I learnt to deal with myself and my fears to the point where I feel in control of my emotions, rather than the other way around. I doubt I would ever have been forced to do this without the trip, and I believe the experience has ultimately led to great improvements in my life.
Every so often I do consider doing halluncinogenic drugs again, but I think the sheer terror I felt during the trip has been deeply imbedded in my mind. I feel no conscious fear of these drugs anymore, and despite feeling comfortable and in control, when I put half a blotter in my mouth a few months back I felt instant terror again, and spat it out. I could probably work through my fears, at the moment though, I just don't have any great desire to. To be honest, I'm just ok with not ever experiencing it.