[wkat4242]

They're replaced obviously because we really need the electricity they produce.

[kortilla]

Not if solar keeps improving or we get the fabled affordable nuclear.

[astrange]

Solar and wind peak at different times, and windmills don't compete with farmland. They're complementary.

(Sometimes farmers do complain about windmills - that's because farmers are a kind of landlord and their actual problem is that it's harder to sell the land with a windmill on it.)