Anecdotally, I enjoy being able to finally tell companies to forget me and stop sending me spam. It has actually worked very well for that. I also enjoy being able to report companies blatantly and maliciously infringing on my rights, because it finally makes me feel like maybe I'm not just some cattle to be exploited for someone else's benefit.
Another benefit of having the right to be forgotten is that I (hopefully) won't pop up in so many future data leaks. I've been fortunate so far that nothing serious has ever been leaked about me, and I've insulated myself well from leaking passwords because I use a new random one everywhere. I do however know a few people who have been burned this way and subsequently become the victim of identity theft. Being that the police lacks incentive and ability to do anything about this (I know this from personal experience, I do not live in a third-world country or even one that is moderately poor), the only cure for this problem is prevention. It helps me to sleep better at night knowing this risk has gotten smaller.