Shallow Christianity

In Matthew 13:5-6, and 20 what happens on rocky soil that causes the seed of  the word of the kingdom to die so quickly? The seed that fell on the rocks did take root, but it was shallow. It had no deep root and died when hard times came. Shallow Christianity focuses on good times and materialism, but not deep spiritual things. For example, health and wealth are a focus of shallow Christianity. Suffering and persecution are rarely or never preached in such circles. The Bible teaches: blessed are those who suffer and are persecuted for righteousness. Shallow Christianity cannot handle the truth and avoids it. But deep-rooted Christianity lives on.