Don't see that being all that creepy, to be honest. This trip these mind-states are on (and remember, they *are* just mind-states in a computer, not actual people with physical bodies) has explicitly been said to be one-way. Even if it was not, the Murtaugh mind-state going on this trip would end up in a different body if it ever made it back to the Milky Way, so would only end up in competition for Karl's affections with Murtaugh Prime. That being the case, I think settling for the closest thing that will ever be available is perfectly reasonable.