I was saying this earlier, you get to 21 and really, anything after that until the age of 65 is just a complete mash up.
21 and under your learning how to live, eat, look after yourself.
21-65 you're actually "living", this is your life and age really doesn't matter.
65+ you've lived, you're due a retirement, you can enjoy some things, but on the whole, there's not loads to look forward to apart from the big sleep.
And every single one of us will do the same, regardless of what stage (age) you're at.
weird huh.