What nonsense!! Brain Drain as a concept is stupid my dear fellow. It is because of that very brain drain that today india is rising. "Brain Drain is better than Brain in Drain".
If a person goes to US because there is an oppurtunity there, then he is leaving a vacant oppurtunity here in india. We donot have any shortage of talented people who need jobs!! We just have to improve some of the people's skills.
I am one of those few who have returned to india after studying and working in US. I have been in india now for 3 years. It is improving in many ways. Stop being negative and try to take advantage of the situation to do something. It is ideal time.