Mumbai is city of food, fashion, youthness, bollywood, tv, nightlife. there are many more such endless things.
I have visited Mumbai 3 times and guess what I always feel like I need to stay there and visit there more often. The sea, beaches, marine drive, shops, I always wanted to live that moment like never before.
Also the mumbaikars are always awesome and helping in nature.may be it an auto driver or bus conductor or a busy, running out of time office man.
Mumbai is also famous for cheap shopping.may be it linking road or colaba or fashion street or dharaavi leather market, you will get good product at reasonable price.