Firstly, eco bags are not cheap.
Secondly, it “doesn’t feel right” to bring an empty eco bag, especially if you are a guy.
Finally, if I use an eco bag when I go for shopping, I will be stopped by the security guards on my way out. You know, we don't like to be treated like thieves.
A couple of days ago, I bought some books in Kinokuniya. I was carrying a backpack then, so I told the cashier that I didn’t need a plastic bag. At the exit, I showed the receipt to the guard. The guard checked the price of the books, one by one, before letting me go.
If we want to dispense with plastic bags, I think the businesses should come out with some foldable eco bags that can be kept in lady’s handbags or my backpack when not in use.
Perhaps the most practical approach – though not the greenest one – is to use bio-degradable plastic bags. Consumers want convenience, and bio-degradable bags will give them just that. Plus, the security guards are less likely to stop us.