I was born in India, grew up in the US, and remember many visits back to the motherland where a relative would extol the virtues of “coming back”. I also remember getting sick all the time, abhorrent public restrooms, sitting in traffic for hours, etc.
Anyone from an actual modern country would agree with you on this, but many Indians living in India would not.
The potential problem is: you've spent a big chunk of your adult life living in a developed nation, and despite your massively enhanced purchasing power, you are returning to a developing one, with all the concomitant physical discomforts and social ills.
But social ills are only a problem if you acknowledge them, and physical discomforts are largely solved with a money bubble, so... there we are.
It’s more expensive to live in a non-developed country than a developed one. Now a close to developed country might be an interesting choice since the prices are still low but the quality is fairly similar.
Having spent more time of my life in more developed countries, I find that a lot of little behaviors that are normal back in India really grate on me which aren't as big of a thing in, say, the US.
Basic things like behavior on public transport, over in the US you can generally seem to rely on people standing to the sides of the door in a rough line until people have stepped off, while in India you have to push your way through the crowd trying to push its way in. It's hard to get used to those sorts of things, and many of them aren't meaningfully addressed by simply being wealthy (since similar behaviors carry over to, say, shopping).
Plus, it's even worse for women, who really can't just not acknowledge social ills in India as they can have a significant influence on their safety.
They do seem to be improving on the infra. front. But compared to China, they are walking with a turtle’s speed.
France is modern. So is the USA, Japan, Australia, Switzerland, Singapore, Canada, and others.
But India?