I was surprised to read that people in the middle age spectrum don't expect to change when they grow older? I guess I assumed that if you can identify that you'

I was surprised to read that people in the middle age spectrum don't expect to change when they grow older? I guess I assumed that if you can identify that you've changed drastically since you were in your youth than surely you should be able to apply the same logic to your future self. I would say this also hinges on the fact that when we're young we go through a lot of quick bursts of change, think of yourself in grade school, high school, etc. You grow quite substantially both physically and personally. That growth slows down, you establish yourself, who you really are, you 'stick' with a core group of friends in most cases and you generally, as people say, "settle down".