Copious indulgence in MDMA during adolescence, and it's subsequent neurological/ emotional fallout may very well disrupt the physical and/ or learned pathways of restraint and reward.
Given the far-reaching range of possibilities therein; love, desire, commitment, and a host of other basic and traditional values and emotional archetypes are dissolving as a result of this and other types of cultural diversification becoming more normative.
Ooop. CVS called, my prescription is ready. Gotta go... Need that shit.