Yeah, I know all too well that it isnt fun in the conventional way. Since this is legal, at least where I did it, I think I can talk about it here.
I went to the Peruvian Amazon back in August and took ayahuasca there. It was an experience, to say the least. I had a rough time on the first night and was completely overwhelmed by it all. I got freaked out and started loudly babbling an incoherent stream of thought punctuated by asking everybody if I was going to survive. I also lost enough awareness of my surroundings to know where the boundaries of the mat I was supposed to lie on was, and where people next to me were, with the result that I flailed around and repeatedly rolled over onto the people on either side of me. I also committed the ultimate tripping foul: I knocked my vomit bucket over onto the unfortunate person to my left. The only foul I did not commit was pooping myself. I was quite proud that I made it to the little composting toilets on time, every time, and had 100% accuracy in poop/fart discrimination, even though the ground was moving in waves under my feet and I had trouble getting to the toilet.
But even though I completely lost it and made a ridiculous fool of myself, it really helped me. Id been having (and still have, to a lesser extent) serious issues with depression, and it helped me to understand that I really did want to live. And there was this overall understanding of what life is and how I fit in with it, which I cant really put into words.
I guess what Im saying about this question is that while fun is good, if I was really going to die within a week, getting more perspective would be worth quite a bit more than fun.