Because taxis don't do this??
If so, I'm guessing you've benefitted from a driver stopping or parking in a place they weren't legally allowed to stop.
Do you think these services should go away, or what?
Just this morning I saw an uber driver stopping at the sidewalk but having the back of his car hanging in the lane making people having to drive around him. That is, in my opinion, just egoistic and annoying. On the other hand if you stop in front of the fire lane without impeding traffic, no one will care.
Also, now there are not only bad taxis, but also bad Ubers!
I feel like there are a lot more Ubers in an area than there are cabs. So I will get annoyed more often by an Uber than a cab.