Colorful Polythenes

We all use Polythenes, and in a day time we touch hundreds of different color, and shape polythenes and it's not the time to know the harmful(like clogging of drainage systems, can suffocate babies, took very long time to decay, burning can convert it into carbon di oxide and into harmful gases, dying of cows because of chewing of polythenes etc.) effects of it, because we all already knew it. Even the city like Dhaka has banned using the polythenes.
Then why we can't do it? not because we don't want to do it but we don't want to do sacrifices. For small convenience like for carrying things we don't want to use paper bags. How often we have seen this in English Movies, we copy so many things from them but not this thing.
I know we Indians can do anything if we oath to do it, but we are waiting for some major consequence before ignoring the polythenes. But if we can't stop using it, just for the sake of country try to avoid one polythene a day. I know if we all do this then we can see the change and one day we all will stop using it at all.