I was SO sceptical about whether or not I needed a Kindle, I thought I was happy reading on my phone screen but I've never been so happy to be proven wrong.
1. Screen quality - The screen is absolutely excellent, Helios himself could be shining the sun at my screen and there would be no glare, I can read perfectly in every lighting condition it's amazing.
2. Battery life - I use mine daily and only charge it once every 3 or so weeks. I never worry about battery life and it holds it's charge excellently.
3. Features - I recommend researching these but it's got every feature you need for an e-reader, it runs smooth and rapid and does what you need it to do.
4. Kindle Unlimited - This comes free for 3 months with the activation of your Kindle, 99% of the books I've ever wanted to read are here and I cannot recommend it enough.
Overall this is a guaranteed 10/10 purchase if you love reading.