Two hundred years in the future, genetic manipulation has evolved to the point where doctors can activate latent genes. One of things this allows is the growing of a prehensile tail like this monkey:
It's strong enough to suspend you from a branch but not as strong as your arm. It's also hairless to match the rest of your body.
I'm guessing that science will never be able to grow a tail on an existing human but they might be able to bring about the birth of a human with a prehensile tail some day, but for the sake of this thread, we'll say it's possible.
Would you get a prehensile tail if it were an option?