We can worry about this in an ideal future when 80% of Catholics are using NFP or no birth control at all, rather than the other way around.
Until then, it is more important to teach the people not to sin and how not to sin, than it is to make them take on tasks beyond what they feel they can do.
"to make them take on tasks beyond what they feel they can do"
I believe that God will never give us more than we can handle.
But I do agree that most Catholics do not understand the the Church's position on life.