[chachachoney]

>> The thing about spiritual awakening I believe is you have to do something with it, nurture it, or it fades away.

Indeed, integration is key but often elusive without doing a lot of work outside of psychedelic experiences.

>> I think (have no proof) that many people who identified as hippies got later involved with non-hallucinogenic drugs like cocaine and that made them forget about spirituality and they became yuppies.

There's a cycle that seems to have happened to a lot of people in that era:

Breakthrough experience, followed by a failure to integrate. The adept then attempts to replicate or revisit the experience (to varying degrees of success) followed by further failures to integrate. Eventually, a bad experience (or lack of access to the tools) leaves the voyager with a malaise (or worse) to which causes them to either abandon the quest, or else to apply simpler, more 'reliable' chemicals which then lead to a much more mundane cycles of drug use.