This is not a discussion concerning if Google Glass will be a success or not, but rather if the concept will end up being 'the next big thing'. Rumors have it that Apple and Samsung are both looking into a head-worn device that they may or may not release in the future and Google will certainly develop their glasses further.
Given, the concept of VR/AR glasses needs to mature (the technology in general needs work, issues need fixing, dilemmas and ethical repercussions addressed) and the audience will have to be eased into the experience, but do you think head-work devices that balance real-life with our online/tech interactivity is going to become common-place?