I have a working system that serves me well too. But I always am interested to read up on other people's work. I want to know if there might be other ideas out there that help me enhance mine, or give me a new way to trade. I wouldn't have what I have today if I was contended with my original system. I try to learn something new everyday.
Though many books out there just repeat the same sets of concepts. I usually skim through the material. Occassionally I found some gems that delight me.
And thanks for sharing.