John Gruber:
Some devoted Newton users suspected spite in Jobs’s decision to kill it – the Newton having been John Sculley’s baby – but I think it was more basic than that: he truly disliked it. Nothing good comes of Apple products that Jobs doesn’t like.
Of course, this may well be an entirely apocryphal tale, but a former Newton staffer told me that killing the Newton was Steve’s first order of business when he walked in the door, and he’d specifically said “Kill that damned scribbly thing.”