Wish that this is true everywhere. Unfortunately, talking to strangers is very uncommon to some cultures.
Where are you that it would be that much of a problem, if you don't mind me asking? Cultural normals are one thing, but on a personal level people do tend to enjoy interacting with one another.
My wife, having spent a great deal of time in Eastern Europe as well, described it best to me - Americans are extremely good at having a surface-level chat with just about anyone. However, it is neigh impossible for people to get beyond the surface-level friendship. Deep, true, and lasting friendships are hard to come by. Eastern Europeans, conversely are extremely distant and cold at the onset, but with a little persistence, you break through that cold exterior and become almost family.
I could not hide my American-ness abroad and I often was the recipient of stares and mouths agape, but I love chatting with strangers. Everyone has a story to tell and many of those stories are downright fascinating and humanizing.