I never minded the random scribblings of other readers, found them interesting in fact. It is a truth universally acknowledged that people write the darndest things in the margins of their books.
I used to always read with a pen in my hand, as if the author and I were in a conversation.
Certain bookworms eat books. Eat them, swear in them, spill things on them.
Reading, for me, is like this: consumptive, pleasing, calming, as much as edifying. It's how I feel after a good dinner. That's why I do it so often: It feels wonderful. The book is mind and I insert myself into it, cover it entire, ear my way through every last slash and dot. That's something you can do with a book, unlike television or movies or the Internet. You can eat it, or mark it, like a dog does on a hydrant.