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This^
The vast majority of people don't upgrade their RAM. The thing craps out after a few years and they go buy a new computer. Its amazing the negativity in a thread with such a positive message. Apple is doing and spending a great deal trying to lessen their impact on the environment. This is a good thing.
These machines end up on eBay or thrift stores and the vast majority would get upgraded and used adequately again for many years. Thus, the best form of recycling electronics.