When I talk to my friends who have moved to do awesome things around the world, there is one theme that transcends different culture, environments, and industries... everyone feels like they have a hard time finding new good friends. It's something I call the "reverse empty nester syndrome". When people finally grow up and leave the security of home and school, they find themselves excited about their future but very lonely in a strange new world.
In school, making friends is relatively easy. You sit down next to somebody in class, introduce yourself, and you immediately have a ton in common (the class, the school, mutual friends, etc). For seventeen years (give or take for various degrees) you essentially make friends professionally. But as soon as you move the tassel to the left side of your cap, making friends is suddenly a complex game. What's worse is that when you still Skype, SnapChat, Gchat, Facebook message, tweet, iMessage, text, and call your old friends, you often can barely find time to make new ones.