Going barefoot

["Beth Glace" <lb@nismat.org>]

I am wondering if I should put shoes on my horse, and was hoping 
someone can enlghten me.  What factors go into the decision to shoe?  
She is being ridden on packed dirt trails with minimal rocks or 
gravel, grass fields, and the ring, with no paved roads.  Her feet 
are not chipping, and she has never been ouchy, but the recent 
discussion regarding bruises now has me concerned.  Can anyone offer 
advice? Pros and cons?
 Beth