I used to know someone who lived in this building in NYC on or around the 30th floor. The balconies were not that wide, and they had glass panels as the barricade. You felt very vulnerable being out on it. He said he never really saw anyone using their balconies because of the queasy factor. I once watched a fireworks show from it, and the entire time I felt like I was going to fall. He said it had a less threatening feel when he sat out there at night. However, because he was so high up, if it was fairly windy at all, it was not that pleasant.http://www.riverbankapts.com/
Street level view of the building.http://tinyurl.com/y8vptkxe
I have been in other tall apartment buildings with balconies and if they had non-glass barricades the experience wasn't as scary, because having a solid barricade gave one more a sense of safety. Another thing that helps at these heights is if the balcony/patio area was set back further from the edge or partially into the apartment itself. I guess I mean deeper, so that you can still enjoy being outside but not feel you could accidently topple over the edge.
I recall being in his apartment during a gathering and the majority of people wouldn't go out on the balcony at all. He said he never allowed anyone on it if they were drinking.