That assumes that the universe is created solely for our benefit... No doubt we will never see most of the universe, let alone go there, but why should that mean it has no intrinsic value, or that God might not like it for some other reason? Even if the whole universe is lifeless apart from our planet, why would that make it worthless or redundant? What's so amazing about life that makes it valuable and its absence valueless? An alternative answer that someone might give if they really do think that the whole universe exists solely for our benefit would be that in fact all those parts we will never see are essential for our existence, although it might not be obvious. Perhaps the universe has to be constructed in a certain way to make it capable of supporting life, and perhaps that requires the existence of innumerable other galaxies and things even though they have no obvious effect on us. Since we don't really understand how universes work, we can't know that this isn't the case.