One of the more noted phenomena commonly associated with millennials is that many of them still live with mom and dad. Taylor estimates that about 40% of young American adults either never left home or boomeranged back after college. Whereas in previous generations an adult living with one's parents was a sign of failure, that stigma appears to have mostly disappeared in recent decades. In fact, Taylor says the cohabitation of parents and their adult children is, for the most part, harmonious:
