I moved from Switzerland to India sometime back, for reasons similar to OP's.

Here are my ₹2

> quality of life

"Quality" is subjective. My wife and I value having our parents around, being able to afford a cook/maid/nanny, not having to deal with winter and darkness, ...

> infrastructure

For sure it's worse in India. But our lifestyle here is such that we don't have to deal with it frequently. We live next to friends, in a arguably beautiful society, and when we do need something done, we inevitably "know a guy who knows a guy", who can help sort things out without us having to deal with the subpar infra. But yes, for sure India could do a lot better on this front.

> chaotic

For someone like me, who was born and raised here, it is easy to thrive in this chaos. This is home.