It's not so much what you learn about Mumbai it's what you learn about yourself really. It's a funny old hippie thing but it's true as well. You find out a lot about yourself and your tolerance and about your inclusiveness.
I first became a vegetarian when I was nine in response to an argument made by a radical babysitter. My great change - which lasted a couple of weeks - was based on the very simple instinct that it's wrong to kill animals for food.