Vampire diaries will be an emotional roller coaster but it will teach you something’s and it will be an amazing experience. It will make you cry, be mad , jealous of some of the relationships , excited, but overall when it’s over you’ll be happy for them and you won’t regret it. After the show if you already didnt you should watch The Originals and then if you finish that one Legacies ,the future of the vampire diaries and the originals, but you could just end it at vampire diaries. And trust me you won’t want to , it will change you because you will want to be a vampire or other mystical creature after all. Good luck :)