Here are ten reasons why everyone should compost:
1. It saves countryside since landfill sites will be smaller.
2. It reduces organic pollution and the nasty smells from landfill sites.
3. It reduces transportation pollution since there is no need for heavy trucks to hall away our trash.
4. It reduces litter.
5. It makes soil healthier by rebuilding the topsoil.
6. It increases nutrition since growing plants in compost leads to good nutritional quality.
7. It saves money on fertilizers, mulch, and landfill taxes.
8. It regenerates nature leading to healthier plants and animals.
9. It cleans the air by putting antioxidants into the atmosphere.
10. It lowers disease by producing beneficial bacteria.
References
http://home.howstuffworks.com/composting.htm
http://www.livingsoil.co.uk/learning/10reasons.htm