Spidey,
In my area ALL cable connections are capped at 128Kb upload. I can get DSL up to 1Mb upload (and 7.1Mb download).
Now, for most people, the upload cap doesn't really matter. But, for me it's important.
And, that nice speedy cable download may not always be there. If node growth exceeds infrastructure growth, it'll shrink. When I was a kid we were on a party line. Didn't like it then, don't like it now.
Of course, cable is available in many areas where DSL isn't so, obviously, the choice is clear if it's that or dialup.
Russ, NCNE