Each to their own I suppose - some people like midgets pooing on them.
The pollution, litter and filth everywhere, endless sirens going in the background, over populated, over priced, generally rude and miserable people - are the main things that make me never want to return. There is a crime problem.. if you want to compare it to the most crime ridden places in the world to make yourself feel safer, that's fine.
Education standards are poor - it's not a great place to raise a kid in my opinion.
Still find myself there 2-3 times per month because it offers so much - just no thanks to living there.