For me, it’s trains. And for two reasons only. Once I was on a train in India, and no disrespect to India, but their trains aren’t the best quality trains around. In fact, it got so bad, that I threw up on the train. I don’t know how it happened, but I’m blaming it on the train quality. On the same train, I also lost my iPhone 6. Don’t know why I haven’t gotten that thought off my mind.