1) if you wanted, you could have a companionship, in addition to a nice girl to have sex with. She can also bear at least 3 children while you're in there.
2) why not?
That is assuming she is a nice girl and not a total bitch. Personally would you want the local call girl to mother your children ??
I agree having a human (doesn't matter whom) in there gives you a lot more company but even so.....