Growing Up is hard to do

I think I have hit that point in my life where you realize that you are an adult, and your friends look older, and you look at what you do and its suddenly responsible...crazy. This has happened to me in the past couple weeks...This past week especially as i see old friends and aquaintances here in NY and I look at them and they are different somehow...No, they dont really act too much different, we still have the same relationships, but they look different, I'm not talking freakishly different like they got botox in their lips and put on or lost a ton of weight, but the different like, wait a second, we are adults, we are the twenty-somethings that we used to look at as teenagers and younger and think, they are the coolest adults ever!!! Have we become the cool adults, are we the ones that everyone wants to be like, are we the brat pack ala st. elmo's fire, working our jobs trying to fit in time for each other and suddenly realizing we are no longer in college? I think so. We have become those crazy twenty-somethings of the 80's that we all grew up watching in movies. We are buying the sweet vehicles cause we can, we are living in sweet apartments cause we can, we have all these new fun toys cause we can, we still listen to the popular top 40's music cause we dont think its just noise, we are shocked when people bring up retirement plans cause we arent that old, health benefits are just cool to have cause there ours not our parents, we visit friends that live far away and speak often cause we dont have other huge responsibilities in life, we are pre-college tuition savings worrying days, and we are beyond the going to the bar every thursday cause friday classes dont matter stage, we are the twenty-somethings, we are married to our jobs, or possibly not happy with what we choose and are still looking for what will make us happy, or permenantly misserable, our friends are still getting married, but some of them are starting to have children...we are becoming the grown-ups, the one thing we promised ourselves we wouldnt become, but its inevitable. I just dont understand how two days ago someone didnt look as old as they do today...why does it hit you like a brick wall?...and do we dare tell each other this?