It's a real shame, because Excel is great for taking quick notes when you have data, but you're not yet sure how you'll want to organize it, or what you'll want to do with it long term. You start by just jotting down numbers. But then you have everything there an an easy to digest form. You can create pivot tables to sort the data. Graphing is easy. The data gets stuck there because it's so easy to use and it's already there.