Out of the many reasons, one is quite simple: daylight. This used to be really important with film.
Historically, this was why efforts to move filming to somewhere like 'Scunthorpe, UK' didn't really work, despite tax fiddles, because you need light and some places just don't have it.
But this doesn't matter now, because film has moved on, there is no need to have a massive glowing unshielded nuclear fusion reactor, 93 million miles directly overhead, just to get some lens focused on some bits of silver halide.