Taking your argument to the logical conclusion: why the hell do we do anything at all if we can just lock ourselves into pods with feeding tubes and have machinery take care of everything?
We go because we can, and we want to. That's a good enough reason for me. Probes have their place. At some point, we need to get TF out there and start building a society. The Solar system has vast secrets and riches, all for us, and we don't have to share, because it's our system.