Millennials are choosing to plant roots in Salt Lake City, Minneapolis, and Pittsburgh at higher rates than in any other of the nation’s 50 largest metro areas, according to a new report by online marketplace LendingTree, which analyzed mortgage requests from January to November. “While millennials are often stereotyped as adolescents, the reality is that this generation is well into adulthood, with most between their early 20s and mid-30s,â€