[throwawaymath]

You really should not be using basic questions concerning things like work life balance as a hiring heuristic for candidates. If nothing else, from a purely pragmatic standpoint you do not receive any new information from a question about work life balance other than, "This candidate has a question about work life balance."

Your interpretation of that question is going to be noisy, subjective, unreliable and intrinsically incomplete. That makes it an exceptionally poor hiring signal. The idea that you can divine interesting insights about a candidate's employability or character based on mundane interview questions is fundamentally flawed.