1. Govt is spending a lot of money to make these new notes with high security features. The cost is very high for duplication & also will be very hard to duplicate, so it will be almost very tough to make fakes as they can be identified easily.
2. I know you don't agree with this government's moves. But if you had studied well all their actions, you wouldn't say that. From SIT to IDS to today's announcement everything was very well planned and is not a gimmick. Did you see wherever Modi went, almost all countries did a treaty to prevent black money & tax avoidance treaties. Also, enquiry is going on against those with money in other countries. Tracing of money is also done with foreign govt's help. Also, you say 500 & 1000 notes is a gimmick, but think of those who have stashed black money in their homes, they can do nothing about it. It's gone. This move will surely cause a little inconvenience to everyone, but is going to be very helpful is stopping corruption. As always opposition will be there. But common people will benefit the most in the long run.