Choosing a wood or bamboo cutting board over plastic not only cuts down on plastic products but is also easier to keep clean and keep free from bacterial growth.* Disposal is also more sustainable: plastic has to be thrown in the trash, but wood and bamboo are compostable. Even if a board is labeled as #1 or #2, which are recyclable types of plastic, they are manufactured differently from bottles and so are not able to be recycled with them. Plastic boards also cannot be sorted properly by the machinery used to sort curbside mixed recycling.
For more information, see this article:
*https://www.treehugger.com/why-you-should-always-choose-wooden-cutting-board-4858094
photo by Susan O'Donnell