There are still a large number of people who shy away from simple things like body piercings and tattoos - I can't see this kind of technology catching on untill there are some real benefits.
I don't see our natural abilities being improved a great deal in terms of strength/speed etc, but perhaps in enhanced perception (glasses, hearing aids, binoculars etc already exist) and extended communication/control (bone-phone, thought-activated devices etc) But I guess we will allways remain largely human. There may be those who choose to disfigure themselves surgically (as they do today) for vanity reasons - but that's nothing new.
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