Worst enemy to a developer (nolock) , Why shouldn’t you use

As I said before this is the exact same session that I learned from Randy Knight , when I saw his presentation I’ve decide not to use any where unless required especially in fianancial and critical decsion making reports , here we will not be going in to details of different isolation levels but we will be specifically focusing on  readuncommited isolation level or using nolock as tablehint , dirty reads and pagesplits