Nope. I'm 36 (turn 37 in a week) and I have similar thoughts. There is definitely a sense of desperation at work.
I do believe that, at this point in my life, the only realistic shot I have at living out my dreams for the future is to build a successful startup. So you are definitely not alone. :-)
I do believe that, at this point in my life, the only realistic shot I have at living out my dreams for the future is to build a successful startup. So you are definitely not alone. :-)