Source: RawPixel/Pexels Guest post by Cristina Schreil. It’s no secret that older generations reached certain family-planning milestones much earlier than Millennials. For instance, getting married and having babies in one’s twenties was once seen as proper timing. That’s not the case with Millennials. Researchers at the Urban Institute found that “between 2007 and 2012 … birth rates among women in their twenties declined more than 15 percent.” As I noted in my last post on Millennials, we are doing things…