Books

Absolutely.

I used to buy every book physically (perhaps due to the whole being a child of the 20th century thing), but have started relying more on epub these days. Despite that, there is something really meaningfull about simply having a shelf of literature that has moved me and changed my life in some way. Through the course of the day I find myself noticing the titles on my book shelf and recalling that period of my life and the impact it had on me. You just don't get that kind of memory connection with a digital book that you never see unless you open your reader to intentionally re-read it.

Also, I have never re-read any of my ebooks. I have however found myself moved to re-read my physical books 3, 4 or even more times. Each time they take on a new significance. I'm sure this is due to the physical presence that they have in my life, and books that I only have digitally just don't seem to have that same effect (with a few notable exceptions.)

Like one of the other comments mentioned though, do make sure to get a copy of the book that has a visually interesting and tasteful cover/spine. Publishers don't always do well with the cover and that can be unpleasant.

Edit: one more thing: being able to reference certain page numbers for quotes and knowledge bases is really valuable. This is really only feasible in a physical book as the page numbers in ebooks shift higher or lower depending on your chosen font size. If you never change your font that may not be an issue, but with non standard font rendering in ebooks and possible device transfers, any notes that involve specific page numbers can be made entirely useless very quickly.