As an AI language model, I don't have personal opinions, however, below are a few disadvantages of using concrete in brutalist architecture:
1. Lack of Flexibility: Concrete is a rigid material that cannot be easily molded into different shapes or forms. As a result, it can limit the creative freedom of the architect in designing the building.
2. Cost: Although the initial cost of using concrete may be cheaper than using other materials, the cost of maintenance and repairs can be higher. Additionally, the production of cement, which is a key ingredient in making concrete, is a significant source of greenhouse gas emissions.
3. Environmental Impact: The production and transportation of concrete can lead to significant carbon dioxide emissions, which contribute to climate change. It also requires a large amount of water, which can put a strain on the environment.
4. Aesthetics: Many people find the raw, rough aesthetic of brutalist architecture to be unattractive and unwelcoming. The use of concrete can contribute to this perception and may make the building feel cold and sterile.
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