(Holy God Almighty: Click her muscles for an image gallery of these beauties)
Can anyone make a good argument for how this isn't the most extreme form of body modification? In my humble opinion, Tatoos and branding don't even come close to this.
On the other hand, being an adherent to the principles and doctrine of the transhumanist movement (if you could call it that) I openly welcome extreme body modification. It's not like the ability to remake yourself in increasingly bizarre and Kafkaesque ways will get more difficult with time. So, it's not really a matter of being able to stop it, it's more a matter of being a happy or unhappy person when it arrives and others want to do it.
We don't all live in a vacuum, remember? Most people don't think exactly like you because, well, they're not you.