Why doesn't the stroke width tool create smooth curves?

Question

Am I the only one who has edited a stroke with the stroke width tool, then outlined the stroke only to find a countless number of points and noticeably unsmooth edges? Is there a setting or certain way to ensure that the stroke width tool won't corrupt the smoothness of my shapes? The stroke width tool is the most handy new feature I can imagine, but this problem makes it almost entirely useless, unless designing something where precision and smoothness are not important. What can I do?

Answer 1

...Am I the only one who has edited a stroke with the stroke width tool, then outlined the stroke only to find a countless number of points ...
I also have noticed that too, for example using the width tool with the same width on all points and expanding on open path results in a lot more anchor points than expanding the same path with the same weight or offset.
... and noticeably unsmooth edges?
I haven't noticed that yet but creating paths with smooth anchor points are more smooth when created with less points, at least when I do it manually but if I use Object > Path > Add Points, or just click on a path to add points, I don't see loss of smoothness.
Is there a setting or certain way to ensure that the stroke width tool won't corrupt the smoothness of my shapes? ..
I'm not aware of such settings
... The stroke width tool is the most handy new feature I can imagine, but this problem makes it almost entirely useless, unless designing something where precision and smoothness are not important. What can I do?
I don't know what your precision requirements are, may be an image example of what you are trying to achieve and what you are getting will help understanding you better but so far I haven't considered this as a problem and have used the width tool a lot in my work.