I can't stand what ubers and lyft do to congestion. The drivers have no incentive to stop in marked areas or even pull over to the side when picking up/dropping off. Most of our busier two-lane streets are now 1-lane congested behemoths thanks to ride "sharing". It does get me on the bike more though. There aren't enough cops to enforce or care about the problem, and unlike some European countries, the culture in the US around citizens reporting traffic violations is nearly non-existent, so everyone gets away with it.
