Who are you angry at? My loans will be paid off in less than four years from now (7 total) and possibly as little as two more years (if I can figure out how to not eat out so much...). My college education was a fantastic investment.
I am not angry at all. I watched people around me in the same situation as you, job right out of school with a good payment plan have life happen and suddenly that 4 yr plan turned into 20.
That was with much much lower debt than anyone I see today having.