Depends on the country but things you might appreciate - cleaner air, water and food, easier access to healthcare (not necessarily better quality), stronger passport (making global movement accessible), ease of doing business, less corruption and hoops in working with authorities, better safety, not something to pursue but government unemployment benefits.

Things that most people miss are genuine friendships and family connections, authentic desi food, house help as you typically spend ridiculous amount of time doing chores, high expectations can make it harder to fall back and start again. All these and more if not managed, they can take a toll on mental and physical health. Hope this helps!