Going out is fun, but it can also be pricey. Now a new study from Mintel reveals that roughly three in every 10 millennials prefer hanging at home rather than going out after work because it's simply "too much effort." By comparison, just 15 percent of baby boomers said the same thing. Dan Ariely, a professor of behavior economics at Duke University says the "antisocial" nature of millenials isn't something they chose-- it's a product of their circumstances. He explains, "It's so easy to say: 'It's millennials and it's personality traits' and so on, I don't think that's it, I think it's what the world around is giving them opportunities for, and sadly the world around them is not that hospitable."