I've read around that one of the reasons for bitcoin's slow adoption is the psychological factor of having "just a few bitcoins."
That's silly. That's like saying there is a psychological factor of having "just a few thousand dollars". Anyone who feels that way, isn't capable of logic and reason. As such, they wouldn't contribute much to the economy anyhow. Eventually, when all they can have is "just a few micro-bitcoin, they may finally see reality and come around.
Sorry, I agree with OP. I came around when having a few full Bitcoins was normal, now I have just 3. Would it be better if I had just 0.30 instead of 1 that is worth $497(as of right now)?