I would agree that plastic bags and other plastic items all pose a serious pollution problem
but it also crosses into regulating business and government overeach which we can see in the
most recent bill passed by the City Council making it unlawful   for  people  to be using an electronic device
while crossing the street.  
Because plastics are a serious pollution and environmental threat as they are not biodegradable, they
should all be banned until science can come up with a viable totally biodegradable form of plastic
which may already exist but is being held  back due to cost.  A total ban would however make its
adoption practical and economic.