If concrete is reinforced, even with proper care, physics will get you eventually. It'll happen faster if you're near a coast. It'll take longer if you're inland. But eventually, the inevitable will happen. Our reinforced concrete structures will never last as long as, say, the Pyramids.

Wood will last longer [than reinforced concrete], again, with proper care. But in the end, entropy wins against wood as well. [And again, wood will never outlast the Pyramids].

In civil engineering, there really is no such thing as a free lunch. All materials come with drawbacks.

EDIT: To clarify wording.