I know I have but not because of their business practices (which I agree they've done some not good things). Lyft is $3 - $4 cheap, consistently, for me in the East Bay. I know for a ride the pricing of either is pretty decent but some days I need to take several rides so I try to save money wherever I can.

Most of the people I know who use or drive either because they seem them as commodities and don't really care. They just pick the better priced or closest one.