How long do you last with no battery in a day? I haven't been powerless except maybe a few minutes before I reached home.
On the flip side takes me shorter to open the ebook app on my phone, tablet, pc than going home to the bookshelf.
I also found it easier to find the file or things inside an ebook than a real book.
Well, sometimes I have flat battery 🔋 for longer period than yours. Again, I prefer the hardcopy to softcopy anyway. But both are good with their own merits and demerits.