Uber has been gradually allowing drivers with poor reviews to work fro them. I have had safety issues and even a driver who was clearly under the influence, among other safety issues. When I cancel a ride due to low review scoring by other passengers, they have charged me cancellation fees and refused to refund me the $2. This happened three times in a row where I cancelled those trips within less than 24 hours. Lyft allows me to cancel trips if I do not like the driver's review score and has now configured me to ride with drivers with a 4.6 score or above. I will try Lyft, Cabify, Juno or Via before choosing Uber as I am sure other companies will come into the market and provide much better services to compete with Uber.