Destroy the Wetlands?

Wetlands are ecologically, economically, and socially important.  They provide a plethora of resources such as economically important fish and plants, and also provide recreational services.  Wetlands provide a natural water-cleaning system that aids in stopping pollutants from contaminating clean freshwater supplies, and also help control floods; they also suckle other ecosystems that depend on flooding.  However, despite the benefits they provide both economically and environmentally, they also pose as barriers.  Wetlands provide a wealthy source of rich, fertile soil that can be utilized for agriculture; with a rapidly increasing global population, a surplus of food is necessary in order to accommodate changing conditions on the planet.  Thus, there may be some logic in mowing down certain sections of a wetland for agricultural, social, and economic purposes.