<i>&gt;Transportation isn&#x27;t a service where it&#x27;s acceptable to have good drivers who get paid more and bad drivers who get paid less, no matter what mechanism implements that pay differential. There should only be &quot;good&quot; drivers.</i><p>Of course, there&#x27;s no universal authority on what &quot;tipping&quot; actually <i>means</i> but I think many people (both the riders &amp; drivers) understand that tipping is for the &quot;service&quot; portion that&#x27;s not related to the driving.  E.g. carrying the suitcases, pointing out the landmarks like a tourist guide, etc.<p>The &quot;driving&quot; component of getting from point A to point B in a safe manner, without making incompetent U-turns, etc is  the <i>baseline</i>.  The tipping isn&#x27;t for that.<p>E.g. I usually don&#x27;t tip the Hertz&#x2F;Avis car rental bus driver but if I&#x27;m trying to carry 3 bags and he helps me with them, I will tip him.<p>All that said, it&#x27;s possible that some Uber drivers want extra tip money just for the sake of extra money.<p>Like others, I also prefer transactions where there is no tipping expected.  It would be annoying to scramble for some loose dollar bills to tip the flight attendants as I try to rush off the airplane to make a connection.