What time-frame do think there is with the commencement and fruition of cyborgism?

There are technicially already human cyborgs, people with one or more cybernetic limb or sensory adaptation. We're still a long way from seeing people who are more cyborg than human, though.

It's the same as the question of when everybody is going to have a personal robot that does more than vacuum floors. Why would you spend $100,000 for a machine that will make you coffee? For what reason would humans cut off their hands to install mechanical fingers for $50,000?

Yes, I was going to mention prosthetics. It is true, some of us are already cyborgs.