When would you not use Generic Collections?

Question

The advantage of using generics is that it increases the type safety - you can only put in the correct type of thing, and you get out the correct type without requiring a ca

Answer 1

The obvious other reason is working with code (possibly legacy) that does not use generic collections.

You can see this happening in .NET itself. System.Windows.Form.Control.Controls is not generic, nor is System.Web.UI.Control.Controls.