On the other hand, rocket launches produce a lot of vibration, and you don't want it to require fixing on orbit. Astronaut labor time I once saw calculated to c

On the other hand, rocket launches produce a lot of vibration, and you don't want it to require fixing on orbit. Astronaut labor time I once saw calculated to cost something like $1M USD/astronaut/day in terms of long-tail logistical support. Once it's up there, it's a negligible percent of the total spacecraft mass, and might be useful for later astronaut photographers.