We've gotten so lazy that the idea of carrying around an iPad the size of a notebook seems like a burden. :x
It has nothing to do with being lazy. Try slugging through several airports for hours and even a couple of pounds get really heavy after a bit. I'm retired now and travel a lot but when I was working it would be the same. I actually had the first windows tablets back in 2004 to carry to meetings because it was lighter than carrying a note pad and all the supporting docs I needed. And taking notes in OneNote saved me hours and hours of time by not having to type out notes to circulate.
It's all about what you need to have with you and the lack of weight means a lot at the end of a long day.