This. I enjoyed my childhood, and I wouldn't trade it for anything, but adulthood is so much more fun in a hundred different ways. If yours isn't, consider what it would take to fix that.
(If possible. I realize that isn't an option for everyone, and some people are working as hard as they can just to reach a secure position in life where they don't have to worry about basic needs. But this applies for those groups as well: if you had a thousand extra years to work with, as a start, you'd have a lot more time to enjoy the secure lifestyle you've worked so hard for, not just to pass that more secure position on to your children.)
(If possible. I realize that isn't an option for everyone, and some people are working as hard as they can just to reach a secure position in life where they don't have to worry about basic needs. But this applies for those groups as well: if you had a thousand extra years to work with, as a start, you'd have a lot more time to enjoy the secure lifestyle you've worked so hard for, not just to pass that more secure position on to your children.)