I don't have the patience to read all these replies, but let me condense what I've learned in 45 years of cycling:
You WILL have flats. You will. I've had nine on a century and three on my 25-mile RT commute. Carry a patch kit, pump and probably a spare tube, and know how to use them. Practice at home, not by the side of the road in the rain with cars whizzing by. First one I fixed took me half an hour. In a contest several years ago, I swapped tubes in a 700x32 tire and pumped it to 95 psi with a frame-fit pump in about 3:30. Practice. You WILL have flats.