In my opinion I think the worst part of life is when you in high school. I'm sure some people would vastly differ with me, however the way I look at it is in terms of freedom. When your in high-school your parents may have to much of an opinion about what you do, your friends might not even be friends at all, your family may not support your choices with the dreaded "your going to regret not taking calculus when your out in the 'real world'".
Once your out of high-school though, the world is your oyster! By that point or shortly after you learn to not take other peoples opinions so seriously. You can choose what you want to learn about instead of the same boring classes year after year. You can work where ever you can get in the door. You learn about life and have millions of hilarious experiences of growing up.
I don't know if I would say life is awesome all the time, but it most certainly has its moments.