Depends on how you define "worth it" but I've had a kindle for maybe a year now and I really like it. I still buy and read mostly physical books but my kindle has been great for a few things! I bring it when I travel, it's small and light so it doesn't take up half the space in my bag or weigh me down, and it's very handy when I'm sharing a room with someone who wants to sleep so I can't keep the light on. It also makes it easier for me to check out books I otherwise wouldn't have, since you can download samples or get good deals. It sucks way less to DNF a book when you didn't pay 30 dollars on a pretty hardcover copy! I also live in a small country so if I want to read something on release day that isn't right in the middle of the mainstream/insanely popular, the kindle version is my best option!