About the rules and civic sense we are pretty aware but we chose to ignore it because no one is going to punish us for littering in public. But the same individual who will be working in another country where they follows every traffic rules, no honking and everything but the moment they enter the Indian airport the desi mode will be activated.
I guess that's exactly where we are lacking behind. Foreign countries have strict rules and punishment/fine even for the basic things.
May be that is why now it has become their habit to maintain the cleanliness but that's not the case with India.
We don't have any fine for littering and people litter without any fear. I used to think many times why don't we have fine for littering.
May be India imposes a minimal fine may be then people will start taking it seriously.