Hahaha, don't worry. I always reflect on my ratings and even revisit some shows just to see what I feel about them. I don't really care about the ratings/reviews of others though, but I do change my ratings from time to time based on my personal feelings and viewpoints. It's okay to re-rate, just make sure that it stays true to your own opinions and not others!
I have a couple of highly rated shows in MDL that I personally rated low and vice-versa. I enjoy re-rating because it kind of signifies how much my tastes have evolved through time, and I love knowing that I'm growing! I won't change my 10s though, I think once a show or a film is 10 for me, no matter how much time passes, it will still be one because it's a score that I reserve for things that have altered me/my life/or I've connected with the most--that to me is an irreplaceable feeling no matter how "objectively" trash something is.
