What city do you ride taxis in? Because the taxis I've ridden have spanned a range of tolerably annoying to downright abysmal experiences. Uber/Lyft drivers have unequivocally been more friendly, punctual, and professional. No taxi company I've seen can manage to make a halfway decent app or even guarantee that a driver will show up within an hour of me needing one.
Even if Uber/Lyft become the same price as taxis, I'll take Uber/Lyft any day over a traditional cab company.