to kindle or not to kindle?

i likely will not invest in a kindle because i am too much of a paper-cover-feel-and-smell-books person. i will admit to being old-fashioned in that way. however, i don't want to be an old-fashioned teacher. trying to realize the difference, i am asking the question, how do i integrate student kindle use in the classroom? with an increasing number of young adults asking, "can i just use my kindle?" i want to think this through well. my first thought is that textbooks are supposed to be free, so i feel as though i can't reasonably mandate that students read books that they will have to purchase while the rest of the class borrows the novel. i see a lot of positive uses for kindles and am trying to be open to furthering reading whatever the means. i would love it if you weigh in on what you think about reading, technology and student use?