Lot of people do not understand the devastating effect of rupee depreciation on common man.
In mathematics they call it boundary condition analysis. Similar approach can be used to find the appropriate value of Rupee.
For a theoretical case : Lets Assume 1$ = Rs. 1000
Now practically all your goods would be exported to outside world. Export would be so profitable, common man wont get any products (whether it is grains or gadgets).
1 Liter petrol would be Rs. 1000 1 gram gold would be Rs. 16,000
Oil would be so expensive, that even oil reserve we have in India would get exported.
What effectively happened is, we are giving all our minerals and work force of every Indian man to the betterment of people in USA (or other countries). What do we get for that?? USA will print their own currency and give it to you.
In bottom line, It is plain old Slavery.
In boundary condition analysis. Lets look at the other side.
Lets assume $1 = Rs. 1
Now every thing in world will get imported. 1 Liter petrol will be less than Rs. 1. 1 gram gold would be Rs. 20. You can buy a good computer for Rs. 150. You can have a round trip for USA for less than Rs.1000.
You can buy a nice private jet for Rs. 50 lakhs.
But You can not export any thing now.
*Unless* the product you export is really really needed by the importing country.
USA is importing like mad. They run huge deficit. And they have been running huge deficit for years. Why do they do that??