It's no surprise that more of us go travelling than ever before, really. If you think back to the 20th century, that's when modern travel really began. In the 18th century things were opened up enormously by the building of the railway infrastructure, but it's only when cars go into mass production and aeroplanes become a form of mass transport that we really start seeing large numbers of people going abroad. In fact, I'd love to know the percentage of UK nationals in 1913 who'd been abroad as compared to the number now. And pretty much all down to technology.
As countries like India and China begin to show unstoppable economic momentum, there are likely to be increasing numbers of opportunites for skilled workers as investement grows. This type of overseas assignment obviously differs from one in, say, Australia or Canada as it means that language training will likely be required.
Anyone travelling to India should of course make sure they have comprehensive medical cover. In terms of health insurance, India policies are available for international (long term) stays such as those undertaken by expatruates and also holiday health insurance for those staying for a shorter length of time.
India is a diverse country with an almost infinite amount of interesting places to visit and cool things to do. Yoga, trekking, boat cruises - you name it, India probably has it. There are even places in India you can snowboard, although generally it's not a snowy place!
If travelling to India the FCO advises visiting your GP a couple of months prior to setting off in order to find out which vaccinations etc may be required.