A big reason I switched to Lyft was hearing consistently from drivers that they preferred it. This has the added bonus effect of meaning that wait times for Lyft are way lower than Uber on average IME, since drivers are more likely to pick up a Lyft fare.
As someone who drove for both platforms, this is not true. Lyft pays drivers more than Uber in the market I was driving in.
Most drivers would abandon Uber in a heartbeat if Lyft just had more users. The problem was that for every Lyft request that came in, you'd get 10 to 20 Uber requests.