It depends on your threat profile. I don't go so far as to use it at home unless I'm downloading torrents or watching porn, since my legislators don't have a fucking clue how the Internet works and thinks they can PrOtEcT tHe ChIlDrEn by blocking porn.
I've started to use VPN when I'm on guest wifis, even encrypted ones. I don't want their owners to know what sites I visit.
Given his sheer laziness, my money is that he's just sitting in it until EOD.