I don't really mind staying late at the office (with has gigabit nLayer, a 4K monitor, free drinks and snacks, etc.) vs. at home (which has comcast, and is pretty small). The commute between the locations is a pain, but otherwise I have no real difference between "being online doing whatever I want to do" at home vs. at the office.

Right now, I'm working on a TC article and some conference talks on independent research. I'll probably drive home once the traffic is done. I'll go to my co-presenter's house Saturday night to work on the talks again.

The "work vs. personal" distinction is really secondary to me, compared to "stuff I want to do, vs. stuff I'm forced to do"; work-related projects are just as often "want to" as home projects are "forced to".