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Large cities have vastly more cultural opportunities than rural areas.

More different kinds of culture (diversity), more examples of each kind (quantity), and usually better examples of any cultural component which is available in both (quality).

Rural areas certainly have cultures of their own. It is not binary.

But you cannot reasonably compare the cultural opportunities of urban vs rural and assert that rural is not lacking, unless you are thinking of your personal preferences only, and the rural area you're using for comparison happens to match up very well with your own preferences.