In a recent survey from the Wi-Fi Alliance, 75 percent of respondents said they’d be grumpier after a week without Wi-Fi than seven days minus coffee or tea. The survey, from Wakefield Research, asked more than 1,000 millennials (those ages 17 to 29) in the U.S. and 400 millennials in China, Japan, and South Korea, reports The New York Times . A week without coffee in order to check e-mail? That’s crazy. Agree ?