Dates is the answer
I am an 8 letter word, 1st 4 is your identity, Last 4 may be average, good, or excellent but the last 2 are ok, 2,3,4 can’t be beaten,
Who am I?
People are scared of me but I am loved by some. I can be your best friend but could become your enemy in a blink of an eye. What am I?