Using the tools of research to learn

In the age of the internet what is the reason for ignorance??
Is it laziness?
Denial? The thought that "there is no way what I learned before wrong"
Inability to care? "Its not affecting me now so I'm not going to read about it and find out more"... I think that's like laziness & denial combined.
I was raised Catholic... and when I started teaching my daughter I really started learning myself. All the historical details that were kept from us so we are lead to believe their way - its awful all the horror stories I've uncovered... just by looking things up