It seems to me the more we learn in life the more realize how truly clueless we are

When I knew very little about life in general, back in my teens, early twenties, I thought I was pretty smart, like I knew just about everything about life and nobody could tell me differently. Now, in my mid-fifties, I feel like I've only learned such a fraction of what life has to teach, of what life is about, that in relation I'm really just an idiot.

Has anyone else reached this conclusion, or am I just losing my mind?