If any intelligent life developed around an isolated rogue star

I wonder what effect it might have had on their civilization. Supposedly there are such things as isolated stars that develop in areas of space that are remote from any galaxies, either in small clusters or singly. Gases can condense into stars and planets even in widely disbursed areas of supposedly empty space. Also, there are other theories to account for these inter-galactic isolated rogue stars in deep space whereby they were either gently expelled from a galaxy through tidal effects with neighboring or colliding galaxies or violently kicked out, probably due to a close call with a super-massive black hole. Supposedly, the Hubble telescope has identified nearly 1,000 such isolated stars that have few or no neighbors and astronomers expect to find many more. Meanwhile, on Earth there are supposedly only three celestial objects that can be seen by the naked eye besides the stars of the Milky Way and they are all relatively close neighbors: the large and small Magellanic Clouds and the Andromeda Galaxy.

If intelligent life arose on a planet orbiting a star that is in complete isolation, would individuals have looked up into the night sky (assuming there's day and night on the planet) and seen only a nearby moon or planet from their own solar system? If theirs was the only planet in the system (a star violently ejected from a galaxy might lose most of its planets) and they had no moon, their night time sky might seem completely black, almost like blindness (that is, unless they developed a much keener night time eyesight than humans on Earth and can perceive distant galaxies). With only one celestial body in their universe, their sun, I wonder how that might have affected their mythology and culture. Without being able to see stars in the sky, how would they have explained reality? Would they have bothered to develop night time telescopes? Would they have been interested in going into outer space, thinking there was almost nothing up there? If they eventually managed to better understand the universe only to realize how alone and isolated they were to the point where to get to the nearest star would require technology even beyond overwhelmingly difficult inter-galactic travel, would they have stopped trying? With nowhere to go beyond their planet, no outer worlds to colonize or exploit for natural resources and no new places to explore or develop on their own crowded planet, would it have turned them inward, possibly inventing computer-generated virtual reality worlds in which to lose themselves?

By the way, I'm not very knowledgeable in science or astronomy and if any experts want to correct me or add anything I'd welcome your thoughts.