I think plenty of people won’t need Textile, because as you say WP makes it easy to format text nicely. My favorite things about textile are the way you can take URL’s out of the way of your text:
"Check out this page":1 for a clear explanation of when and how to use the right hand rule(s).
The image below shows another perspective from hyperphysics":2
!4!:3
[1]http://physicsed.buffalostate.edu/SeatExpts/resource/rhr/rhr.htm
[2]http://hyperphysics.phy-astr.gsu.edu/hbase/hph.html
[3]http://hyperphysics.phy-astr.gsu.edu/hbase/magnetic/magfor.html#c3
[4]http://hyperphysics.phy-astr.gsu.edu/hbase/magnetic/imgmag/rthnd.gif
And the way it deals with multilevel bullet lists. I will probably also use the tables at some point.
I would point you to the Textile page for a demo but it seems to be down just at the moment.
