Uber is not a 'tech' company any more than pizzahut is for having an app.
Uber comes from Silicon Valley, its culture and its employees there are interbred with other large tech companies. No, the drivers aren't, but in its soul I'd say they are a tech company.
because idiots like techies think its 'great' for some unknown reason.
As an American techie, I can explain. I've lived in 3 major US cities. Getting taxis are the worst fucking experience in the world here. Let me clarify, it's not always that way. In fact, I'd say 90% of the time it's not. But then again, 90% of my dealings with Comcast are fine too, but I think they're awful in customer service and the majority of society agrees. Uber (and Lyft, which I think is also awesome), has provided an amazing service that solved so many of the problems of using taxis.
Some of those unknown reasons you were asking for from an idiot techie: The map which shows you where all drivers are (I can even switch to Lyft to see if the competition has better availability in the time frame or better surge pricing when that happens). The fact that you can request one and they come to you within minutes, unlike Taxis where you never fucking know when or even if they will come. The ability to rate drivers. The fact that they're cheaper. The fact that they're WAY better drivers than most of the immigrants who are taxi drivers in the US who learned to drive in a different country (no disparagement to immigrants meant, but driving in Ethiopia isn't the same). I've gotten out of a taxi in NYC with my heart pounding because I was so scared of the way he was driving. The fact that they're safer, because unlike anonymous taxis who can rob you or rape you, Uber is tracked (and you can even broadcast a message to your friends when you start your ride). Many times they'll provide water and gum for you. The fact that if you leave something in the car, you have the ability to use the app to inform the driver/system and have them return it to you, unlike not knowing what taxi you were just in (happened to my friend who left a cell phone once, we gave him a nice tip for his trouble; I and many other people I know have left something in a taxi, never to see it again - one time we got a cell phone charge for $100 for calls to Kenya a month later).
Have I missed any reason why they're so much better?
And remember, you don't have to use Uber. If you hate them, you can always call a taxi.