Why are we in such a rush?

After reading Nora Ephron's piece "A Few Words About Breasts,"  it never really hit me until now...but...why are we in such a rush to grown up.  Life is so short why not enjoy the moment we are in.  In the story Nora at the time is extremely frustrated that she has not developed as much as her friends.  However, I understand that at the time this may have been such a big deal to her.  Nevertheless, in all reality how big is it?  Everyday I look around and am just in complete and utter shock that I am in college.  How did time fly by so fast?  Why do we want to rush the good times?  

Yesterday, I learned some horrible news.  One of my friend's father died.  How can you ever replace a father?  I remember all last year just saying how much I wanted to be done with high school and get away from my parents... but then yesterday it hit me... why do we want to get away from our parents and not be under their control anymore.  Why do we want to rush it?  My friend was in tears all day just frustrated with the fact that her relationship with her father was over and she wished she could have said so much more.  I spent my whole night comforting her and I came to the conclusion that we should not want life to pass by so fast.  It is so short that we need to make the best of it.  I realize that this is quite cliche but it finally all clicked in for me last night.  

That is why you should not want things to go by fast or want to be over with a certain part of your life immediately enjoy it...it won't last that long...