LSD is completely different from just feeling good. It's reality altering. I've never "fully hallucinated" (seen things that were not there) but I've had several instances of "visual effects". Mostly low-to-medium level effects, like walls and surfaces seeming to move and breathe, clouds wavering and slow-dancing in the sky, that kind of thing. No purple dragons or anything. Possibly the more important effect is that everything seems "amplified". This I suppose to similar to the feel-good thing, but it goes beyond that. Everything is brighter, more vibrant. Sounds aren't louder, but seem more distinct. You walk around and everything just seems really cool, really amazing (some theorize that this is because you've become a lot stupider, so in a relative way, everything is much cooler and amazing). Tripping IMO should only ever be done either alone, or in the company of people you trust 100%. It's really easy to fuck with someone on LSD, and it's also pretty easy to get a bad reaction, or so I've heard. I suppose I've had the good fortune of doing it many times but always in good circumstances and with fun people who I knew well. Also, this was like 40 years ago, and I doubt I would do it again. But I suppose it would depend on the company and the situation.