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Three problems with ASICs:

(1) Their higher capital cost, limited availability, and limited "appeal" promotes effective centralization of mining.

(2) Due to #1 mining rewards go to fewer an fewer hands, promoting inequality and centralization of wealth.

(3) ASICs increase the overall wastefulness of PoW currencies since they're e-waste. Mining ASICs are worthless for any other purpose, while CPU-mineable coins at least promote the production of things that are otherwise useful. If a miner liquidates a bunch of CPUs and GPUs they will see use on the market, while ASICs are junk.




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