The thing with Uber is that in some places it's the best thing ever and in others it's just a complete disaster. Both view points are correct and I have experienced both myself. For example, when travelling, particularly in notoriously dangerous countries where taxis are extremely untrustworthy and often outright dangerous (driver works with gangs who mug or kidnap you - yes that almost happened to me and it happened to a female friend of mine) Uber has been a real superstar. Uber knows about my whereabouts, knows who picks me up, where the driver is driving, who the driver is and so forth. For a criminal that is too much intrusion and therefore Uber drivers are safer than regular cabs. You can verify that the person who drives the car matches the photo of your cabbie, you can check the reg number, you can follow on your phone if they drive the route calculated by Uber and so forth. If anything appears dodgy you never get in or you're out at the next red light.

On the other hand in first world countries and extremely well connected and overpopulated cities like London Uber is more of a disaster. They clog up the streets and create so much more unnecessary traffic. Uber drivers are extremely picky and don't accept rides which are not going from one prime location to another prime location. They are more expensive than black cabs and offer a worse service. In London black cabs are soooo much better, they can drive in bus lanes which Ubers can't do and therefore beat traffic whereas with an Uber you pay more and then it takes you still twice as long to get anywhere. Also black cabs have more space, they have card readers in the back and you can easily hail them down. It's so frustrating with Uber, especially at night when you want to get home from a party or something which is 10-15 mins away from a busy area and then you try to get an Uber and stare for about 20 minutes on your phone where the app makes you believe that you get a driver confirmed in 2 minutes but it keeps changing and nobody accepts. Literally happened to me so often, looking at my phone and it keeps lying to me that a driver is 3 mins away, then 2 mins, then 4 mins, nobody confirming but it also doesn't allow me to cancel after like 10-15 mins which means I'm then stuck waiting. Uber is so shit it pisses me off. If I don't get an Uber in like 2-3 min then I don't want it and just walk down the road and hail down the next cabbie. So much easier in London sometimes. Anyhow... it's very different in different places.