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xkcd #2849: Under the Stars
(imgs.xkcd.com)
Alt text:
If you live in Los Angeles (around 33°52'N, roughly the latitude of Hermosa Beach) the black hole in V404 Cygni passes over you each day. On Christmas Day it will be directly overhead around 2pm.
To take this thought to the logical maximum, we are all under the stars, always. All buildings are ultimately outside, and therefore under the stars. Even in the sub-basement of the tallest building, the floors above aren't that high compared to the atmosphere, and it's still under the stars.
We're not under the stars; we are amongst the stars, surrounded by the stars, encircled (ensphered?) on all sides.
That is an excellent point!
"Roofs" are just us closing our eyes and pretending it makes infinity go away.