I've never Uber'd and I never will. Legally licensed cabs only.
Cab drivers are required by law to have special training. They are required by law to take you where you want to go within limits. They are required to meter your fare according to a certain rate that does not change. They have a meter that is inspected and regulated, so it doesn't cheat and rip you off. They are required by law to not refuse passengers based on race, disability, how rich they look, etc. These are only some of the many regulations that a licensed cab driver must obey. If they break any of these rules there is quite a good system in place to penalize them with fines, or even losing their license.
Uber, Lyft, etc. drivers ignore all of these rules. It's not legally much different than if I just opened a doctors office even though I've never been to medical school. Under existing law you could just put all Uber drivers in jail, and why not the executives also? They're running an illegal operation.
Add on top of that the surge pricing, employee exploitation, sexual harassment, and whatever other scandal, and I see no reason not to nuke them from orbit. I mean, they've got a whole thread dedicated to their controversies. That's not something that happens to non-evil companies.
The only positive thing I can say about these companies is that they make it easier for people who can't drive, are in a situation where they desperately need a ride, there are no friends with cars, and no cabs just roaming around. For example, you live in the 'burbs. It's late at night. You are all drunk at your friend's house. Nobody can drive. You need a ride home.
It would be one thing if the ride sharing companies pulled a Crunchyroll. They start out operating illegally, and then go legit. It's been years, and they still have not done so. Ubers are driving around without medallions. Their drivers aren't licensed and trained properly. Fuck 'em.