It will never happen, i didnt say there is a possibility that it may happen.
It come back to a question about religion again, is there God?.

If there is then it will never happen, if there isnt then there is a possibility of it happening. Depends on which way you look at things.

A robot can never re-produce itself,unlike human (yes we know,it takes 2 to Tango).
A robot is as good as what you make it to be.