Delights born of sense-object contacts are the wombs of misery. They have a beginning and an end. O son of Kunti, the wise one does not rejoice in them.
What prevents one from pursuing spiritual path and being immersed in blissful Brahman? Is not the human wise enough to realize the relevance and merits of spiritual pursuit? Krishna answers that it is lack of discrimination about the nature of world-objects and the pleasures they afford. All delights and thrills, says Krishna, arising from contact of world objects, are wombs of misery!
However endearing the objects seem, any pleasure from them leads to subsequent affliction. Every enjoyment, as Nachiketas tells Yama in Kathopanishad, corrodes the senses. By seeing and hearing, eyes and ears get worn out.
Sensory enjoyments have a beginning and an end, which are characteristic of the fleeting. One given to introspection will not rejoice in them. This kind of discreet dispassion, Krishna has stressed even in the 2nd chapter (2.61) while describing Sthita-prajµa and Sthita-dhee. It is a cardinal lesson of Bhagavad Gita. Dispassion and discretion go together.