I like the experience of having hundreds of books in my backpack, without having to carry them. I tend to prefer Kindle books when available, but I read them on my iPad (my wife inherited the actual Kindle). It's easy enough to take notes and make highlights within the Kindle app. If I need to make a sketch, I'll grab a pad of paper, just like I would with a dead-tree book.

I do buy books that are not available in eBook form or that are an "experience," like the collected Sandman comics.

I don't feel like I'm missing anything.

You make it sound like it's an ideological issue. For me, it's simply personal preference.