Small example of how modifying your web can be useful.
A brief overview of the DOM4 MutationObserver.
Anyway, this isn’t about whether you should or shouldn’t, can or can’t, will or won’t learn to program. This is about doing the actual bit that’s being discussed abstractly.
To the point: we’re all mostly just using the web, and we’re all using it in more diverse ways than ever. So, what is the important thing? There are several.