Culture shock is the main reason why I've never wanted to travel outside the US. Sure, places like the UK are fairly similar, and I wouldn't even know the difference, but it's still worrisome to me. It's mainly for the reason that I'm picky about food. Most other places have different types of food that I would be too afraid to try. Who knows, maybe over time, I'll get over this fear and make an effort to travel elsewhere. 
