I wouldn't say that books are "infinitely" better. Online content can still be good and there are truckloads of books that are garbage. But in general it is easier to find really good books than really good online non-book content.

When I wanted to learn about something then I usually first go to Wikipedia. Which by the way is OMG such an amazing resource I wish I had as a kid.

Then I move on to online articles or website devoted to the subject. Then I usually start going through books.

But here's the thing. The value of a book might be mostly just be in the bibliography at the end. Unfortunately a lot of those books aren't at the bookstore, aren't at archive.org, aren't at the library. So I'm forced to use the inter-library-loan service through the library. Which by the way is an awesome service that I just started using.

And you know what? A lot of those books are treasures.

So, no, not everything that's worth it is available online or ever at your book store.