It's funny

I don't know if I could say it's funny , but it does feel that way. I'm talking about how you realize things you thought you already knew and understood very well when it's too late. or when you realize that you've taken a certain person in your life for granted knowingly. I honestly can not figure out why we people do that. and it's always when you're forced to stand on grounds that are unfamiliar to you,that the truth comes crashing down on you like angry waves! Your eyes pop and your then comes the infamous "OHhh!" The "How could I not see this before?" or the "wtf was I thinking?" but then again we must remind ourselves that in the end we are merly human, and stupid regardless of our IQ levels. We scew up time and time again.