To be fair DRM is a waste of opportunity. If I buy a book, movie, or album I want to use it however I choose as long as it doesn't breach copyright laws.

I've been burned too many times by DRM'd content that stops working after a service/app update, is useless when the company goes out of business, or when it works on one of my devices but not another.

Libraries all use Adobe DRM. Kindle doesn't support it, so it's not in consideration for me.

I don't want to buy ebooks.. I want to check it out via my local library