I'm purty sure that human history really is approaching its climax though.
That certainty has a long history: millenialism, the Age of Aquarius, "The End of History" (book a few years back about the current state of sociopolitical affairs as an end-point), countless second-coming watches, plans to greet the Mother Ship...
Also, from my perspective as an graying no-longer-so political activist, I recall that youth carries its own sense of urgency and imminence, the sense that things can't go on like this, that things are coming to a head. We see the world on the scale of our individual lives, but history works its most profound changes on a larger canvas.
You may in some sense be right, but you would be the first in a long, long line of folks who felt the same way and turned out to be wrong.
in fact if I just graduate and get a job next year, that looks like a pretty boring anti-climax to all that's gone on in my life...
Best of luck and good wishes: I am confident that life will offer you adventures.