Are you sure people aren't defined by their physical characteristics?

As a professional in my mid-twenties, I pay a large portion of my paycheck to social security benefits for an ever-increasing elderly population. While I understand that I have a civic duty to assist those in need, I often wonder if tomorrow's youth and government will be able and willing to help me in forty-some years when I need it. Do you believe that Social Security, in its current form, will be available for my generation, and if not, what specifically do you see wrong with it and how will you address it?