In the Matrix, when Morpheus tells Neo
"You have to understand that most people aren't prepared to be unplugged from the system,"
He's talking about a profound truth of human nature.
The "system" in the Matrix is a metaphor for the illusion of what is real, an artificial construction designed to control and subdue humanity by giving them a false sense of reality.
Most people today live trapped in this illusion, unable or unwilling to see beyond the veil of lies, manipulation, and control.
Morpheus understands that, for many, the comfort of the system is preferable to the unsettling and often painful process of awakening to the truth. People are conditioned from cradle to grave, through years of indoctrination, sometimes generations, to accept the world as it is presented to them.