At least it's somewhat based in reality.
Since competent enough nanomachines would be able to do pretty much anything in the human body that would give you a free pass on a lot of things but not everything.
They might be able to cure the cancer caused by space radiation but they can't eliminate strong enough radiation. Also FTL travel is still very much out of the question.
If you demand respect or gratitude for your volunteer work, you're doing volunteering wrong.







