The tutorial page for classes starts with "Compared with other programming languages".

While object-oriented programming and classes are popular in many programming languages, not everyone learning about Python's classes is familiar with the concept.  I teach both new programmers and programmers who have heard of object-oriented programming but never created a class before.

I think the first paragraph on this page should be a brief explanation of the use of classes.  It may also be a good idea to have a "Why classes?" section explaining the uses of classes in more detail.