Yea, there's not really any evidence that LSD alone "Causes" shcizophrenia whatsoever, it's lingering effects are very small, yes you will have "flashbacks" because your first few LSD adventures are HUGE experiences on your brain trying to process so many new experiences at once, it'll be engraved into your memory, the only LSD accidents are dumbasses who are inexperienced take it alone and think they can fly, that's why the majority of psychoactive trips are used in groups, so people go on their adventure together and help each other through it, as I said before, it's the ghetto chemists adding their own "Secret ingredients" that really **** with people.
Vox and maybe a few others who have experienced LSD (Vox used life altering as a description, so true) it will honestly change the way you view EVERYTHING in life, I honestly believe the stuff it does is simply amazing on the plane of thinking you can go into.
as far as DMT, which is mindblowing even more than LSD, DMT is the chemical your brain releases to make you dream (dreaming meaning, everytime we sleep, we trip for 8 hours) and DMT...wow.
Peyote however, blew DMT and LSD out of the water, when I was in arizona, we were hanging with an old friend and he took us to some cermony for his Native American tribe, and I got passed a nice cup of pure peyote to drink from (Peyote is legal to the tribal ceremonies by the way, heh.)
To this day I always strive to return to AcidLand and the Spirit World again, but alas, so hard to acquire. =(