so I can just pick it up and throw it in a bag for a holiday and never think about it.

I understand some other arguments, but I never understood this as a 'pro e-reader' argument. Unless you're going on a "no-electricity available for days" kind of vacation, how is this even a factor?

I charge my phone every night while I'm sleeping, and I have my phone with me everywhere I go. So I NEVER have to think about whether I need to throw an e-reader into my bag or decide whether to grab it on my way out the door. Wherever I am, if I have time to read, my phone is already right there, so I just read it on my phone.

And as long as I'm not playing 3D video games on my phone, the battery easily lasts all day, even with the screen on while reading, so that's never been a factor for me.