We cannot lose our perspective. It seems that many, many make this mistake, even after years and years of reading chanting and so forth. The controversy over the jiva issue is a good example of this urge to make the philosophy coincide with what we believe rather than set belief aside and hear the philosophy on its own merit and if necessary update our maps of reality. This is how the process works. People are unwilling to do this.
People are lazy.
Therefore it is rare that anyone knows Krsna in truth, even though thousands may take to the path initially. Maya derails them sooner or later. Maya has several other schemes as well.