The depressing, if that's the right word, counterpoint to all the "oh my god it's fun of stars" deep fields crammed with millions of galaxies per square arcseco

The depressing, if that's the right word, counterpoint to all the "oh my god it's fun of stars" deep fields crammed with millions of galaxies per square arcsecond is that the expansion of the universe means that nearly all of them are permanently and irrevocably out of reach even with near-lightspeed travel: they'll literally wink out of observable reality before we could ever get to them, leaving only a few nearby galaxies in the sky. At best you can reach the handful of gravitationally-bound galaxies in the local group. Not that the Milky Way is a small place, but even most sci-fi featuring FTL and all sorts of handwaves has to content itself with shenanigans confined to a single galaxy due to the mindblowing, and accelerating, gaps between galaxies.