I believe there being no other benefits is untrue. Such a body carries water, metals etc. Regolith, couldn’t that be used as a soil like substrate for some kind of farming? Even if not, the terrain itself could still be used to provide the space for farming, processing of materials and manufacturing tasks. Maybe the initial craft never launches with a telescope but manufactures one on-board the asteroid. Perhaps a small scale human colony? Inside the asteroid, protected from at least some radiation?