[_-__---]

24hr service would be very expensive, but it seems that they should run the transit services until a little after the majority of bars and clubs close. It was nice here in Boston when they ran the T until a little past 2AM; they've since pulled that back to 12:30 or so. It can be kind of a pain, but Uber/Lyft are well established here.

[Rebelgecko]

It's certainly usable for that in LA, where last call is also 2am. I believe every train runs until 2 or 3 AM (on Fridays/Saturdays), and starts back up again by 5. Not quite 24 hours(except on NYE, when they don't stop), but still very usable.