Ethanol blended gas (good or bad?)

Yeah well hang on cause last I heard was the EPA is getting ready to increase the amounts of ethanol to over 10%. Some are saying it could go to 15% maybe even 20%. Big debate in if it should be marked or not so older cars will not use it. Then again the epa-our government only cares about what most people drive, so about 15 years old is the limit.