I've been to (Australia, Milan, Munich, Berlin, Malaysia, Singapore, India, Japan, Dubai, Canada*does it count?*)
I would never go back to Dubai and possibly Australia
Dubai, the extreme, extreme materialism and inequality to me is really disturbing, it's the only place I've been that I actually dislike.
Australia was surprisingly (or not?) a bit racist but on the opposite side of the spectrum, there were also incredibly kind people, however it was just too much like America and I found it boring.
My favorite was Milan, Japan and India --
In Milan the people were very nice to me, granted they really thought I was Italian so that may have helped. Japan is so cultured and kind.
India, well since I'm Indian and I have family to stay with, it's actually pretty fun, Plus I am from South India so that means --- no city, less people, more temples, acres and acres of coconut trees, cute cows playing, clean beaches and the Arabian sea.