Jared Zimmerman writes:
I'm tired of fighting over this, I'd like to move on, and moving on does not mean going on to the status quo.
The status quo has been thoroughly tested by 400 million viewers a month, for 46 months (June 2010-March 2014; ); it is a flexible and elegant solution that leaves the choice of the exact font up to the reader's software, as already explained by Isarra.
I'm tired of having https://gerrit.wikimedia.org/r/#/c/124475/ blocked for no good reason at all, when five people have already +1'd (how many other patches have you seen like that?).
Steven has essentially said that we're /temporarily/ reverting to a setting that is know to work over his dead body; we don't need you to take the same approach, too.
Or, alternatively, please do explain here why setting font-family to "sans- serif" is disruptive, sub-standard and generally not a bright idea.
Tomasz