it's the reverse side of the hikikomori coin. It's not good. No one I know who does it is happy, they have all admitted at one point or another they want a real relationship, lots of people do it as a trauma response. It plays into the anonymization which plagues our society and prevents community building. There's a place for casual sex and free love, but this is bleak shit. A healthy society doesn't have the levels of objectification we are sitting at.