tropit

My "go to" width to cut binding fabric is 2 1/2". I fold it in half and sew it on, then fold over and stitch closed. However, a new pattern that I'm working on is asking for a 3 1/2" width. I'm not sure why. Perhaps just for the design/look of the quilt. That got me thinking about how wide is too wide, or too narrow. How wide do you go?

Thanks, Cindy