Never really had any issues in ORD, usually find Lyft to be cheaper though. Was once in Lakewood and needed a ride to PHL in the wee hours of the morning. After waiting 20+min for an Uber driver, he refused to take us because it was too far. After explaining the situation, and telling him we'd likely miss our flight, he agreed to take us but needed to stop for gas. I think he genuinely felt bad. I was once in an Uber after a Superbowl party, and was completely wasted. The guy was going off about how he hated some of his passengers and how when people use promos he gets paid less (I was using a promo) and he was pretty descriptive of how he would like to rip out some passengers eye balls and kill them with some select items in his trunk. Was mildly nervous, but was too drunk to care, and gave him 5 stars because I had a good laugh. In hindsight, he was probably not a safe individual.