Mint works. Most alternatives don’t. I can install Mint on a total newbie’s system, and not have to worry about something breaking two weeks later. Hell, most newbies can install Mint if you give them the USB.
On a deeper level, I think Mint devs are one of the few teams that understand the ‘if it ain’t broke, don’t fix it’ philosophy.
Doesn’t that already exist in parts of the US? I know the UK and Germany have it.