Quality of living sucks though. The same money won't buy you same comforts. Commute is terrible. Housing sucks. Coming from a small village, I often feel alien here :). Though its a different kind of alien when compared with when I was in USA for short visits.
Healthcare is usually way cheaper and you can hire maid+cook. All I can say is that money shouldn't be primary driver for your decision unless you are doubling your savings. Also there is huge risk of rupee depreciation which is robbing us of any real wage growth.