Nobody has any consensus about the best years of your life. I always hear people claiming that adults told them when they were teenagers that "high school is the best years of your life," but I always heard quite the opposite. I feel like college is a much better argument for the "best years of your life" when you're in school, but honestly, life doesn't really start until you've finished your education. There's a lot of talk about how you're supposed to have as much fun as possible in your 20s because once you have a family and kids, it's all over. That's a pretty pessimistic view, and if you've been in your 20s for more than 20 minutes, you know that the "fun" is secondary to the constant crises. If you think that your 30s, 40s, or 50s are when life really begins, these memes might resound with you.