I love cotton, sheets, clothes, towels, batting. But...I live in cotton growing country, and it may not require toxic chemicals to process the raw cotton into the many end products, but they still defoliate the plant before picking the cotton, and they use chemicals similar to "agent orange" to do that. I don't know much about the processing of bamboo, but I am a certified landscape nursery pro, and most bamboo's don't require a lot of water to grow well. Some varieties will grow 2 feet in one day.