Last night i had a conversation with my high school pal's about LSD. Three of us decided, as brother's, to take the journey. It's going to be our first time. The three of us have acknowledge it's time, we need to break the 5 sense and experience what's out there. A 4th friend, decided to skip out on it. He gave me no reasoning, just a very stoned/drunken " No dude, i'm good, i don't want to take that". He's fat, he's never had a gf, he like's to get stoned, and get " fucked up" and i strongly believe has no affinity at all to the alternate mind scape. It's all a fucking "high" for him. It pisses me off really, but i respect his wishes. Still, what could cause someone to blatantly refuse lsd? He was listening in on the conversation me and the two were having, it was real deep and comforting, putting our mind's together for one unbelievable journey of self discovery, it wa quite out. We might've have scared him? LSD is no drug to get "High" off of, and i made that perfectly clear. Maybe he didn't take that too lightly..
Some people find a couple things they like and decide to stick to what they know. Also, some people may not be able to handle a trip - I don't understand why your friends decision to not partake would cause you anger. Do you feel that his not participating is somehow a judgement on you?
For some people the thought of altering their reality that significantly (even though they can't possibly have any idea how it will be altered) is terrifying. Sadly this kind of attitude is very self-fulfilling, meaning if he were to summon up just enough courage to swallow some lsd, the fear of changing his mind would cause an uncomfortable time (possibly) once the compound started changing his mind . . . some people are just not at a point in their life where they are ready for that.
As many have already said the decision to do LSD is something very personal. I myself may have more insight to your friends decision as I was the same way at first and many of my friends still decline. When I was first told about LSD the first thing that popped into my head was "ACID." Ingesting an acid just sounds scary in general, its not something that is regularly ingested, and the stereotypical beliefs about it are immense. I'd heard many rumors about instant death to going insane, acid buildups in your body etc. After a very smart friend of mine (astrophysics major) researched it more and told me how safe it was and how profound, I decided to try it and loved it. Had this respected person not been the one to research it and tell me things about it, I would still be stuck with my original beliefs, scared of the drug. Now I am not saying you are not respected by your friend, but maybe this is just an opinion of yours he doesn't relish as knowledgeable. Maybe you could research it for him and bestow him with this knowledge, because as we know with knowledge comes power, and comfort as well. Eliminate the unknown. As for friends of mine that haven't taken the drug it's still their choice. For instance one of my friends regularly takes MDMA but has told me he will never try acid. In fact he doesn't even like weed anymore because of the "loss of control" it gives him. Remembering all this, for your friends and your safety, let him choose when to do the drug. You and your friend will be much better off this way.