The Kindle price

I've had a Kindle for a few years now. I read a lot on it. And yet I observed something recently: I've stopped going to the library much. This is a big deal for me...probably since the age of 7 I've clocked in at least one visit to the public library per week in my life. I never turn books in past due because of the frequency with which I patronize the public or university libraries which I've had access to in life. Until recently. Now on occasion books go overdue, because I don't go very often. In the short term the Kindle has been a boon. But I'm not sure if it's good for us in the long term. I'd rather pay more for a device which allowed for easier usage of different formats, as well as looser distribution policies.