Sensual pleasures give little gratification and much suffering and distress, and they are all the more full of drawbacks. Even though a noble disciple has clearly seen this with right wisdom, so long as they don’t achieve the rapture and bliss that are apart from sensual pleasures and unskillful qualities, or something even more peaceful than that, they might still return to sensual pleasures.
A lay person is puzzled at how, despite their long practice, they still have greedy or hateful thoughts. The Buddha explains the importance of absorption for letting go. But he also criticizes self-mortification, and recounts a previous dialog with some Jain ascetics.