Moreover when I work, I work, so if the sun is already down I'm ok with it; when it's up I can do all the active parts of my day that are more enjoyable during the day.
Still, it's not perfect. I don't think it would be that big of a deal for social life, because most events happen during the weekend anyway, but you'd still be expected to not be available for anything. Hopefully this is just the first phase for Quora, and they'll realize at some point that the whole point of working remote is that everything is asynchronous and synchronous is the exception