Said my pinky because I have reoccuring joint problems with the one on my right hand. Pretty annoying.

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Internet Lurker At Heart

Why pinky though? You use it to play games and hold things much more than you think. LOL
This poll is the first to get me riled up XD

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The fun thing is that most of the comments say the ring.

Ring finger of non-dominant (left) hand.
It's the least used finger in piano, and like others have mentioned, it's the weakest. I'd probably be able to work around it in songs that mostly have the left hand playing chords, even if I have to edit the composition a bit.
And it's not like I'll be getting married anyways lol.

But seriously, losing my fingers in an accident is my worst nightmare.
I would honestly rather lose a leg.

The ring finger has less strength than the pinky only because of its lack of usage. Its theoretical load-bearing capabilities are greater (proportional to size) if you train it.

As far as independence goes, you're absolutely right... except that the dependence is on your pinky rather than on your middle finger. If the ring finger was more obligated to stick to your middle finger than pinky, you'd have a point--but since that isn't the case, the ring finger would naturally take over all responsibilities of the pinky if you lost a pinky. In contrast, feeling the awkward gap while losing a ring finger seems way worse.

Eh. I just used it as example most people here can relate to. I don't use my right pinky half the time when I lift things either, which I believe is unusual for people. It's useless in my hobbies of cross-stitch/embroidery and reading books. I don't really use it when cooking or writing either. Left pinky was needed for short-lived guitar playing and holding yarn for crochet/knitting, but my right one doesn't do that much. If I had a hobby of sword fighting or needed to do more heavy lifting in my daily life where that extra grip strength is really important, I'm sure my pinky would be essential to me.