All SMART enabled drives have 3 very useful settings.
I noticed many years ago most drives (easily around 90%) I have access to come with only 1 setting enabled, eg. SMART = ON
Self testing and saving of the reports is generally disabled.
I wonder how common this is beyond my own experience, and ask that you look at your own drives and post here.
Unless your drives SMART data is current and accurate, what tends to happen is your OS only complains when the drive is almost about to die because it has become so bad.
No OS comes with built-in SMART checking only the ability to report errors when notified, which if you never run tests or use a SMART monitor may come too late.
You can look at the 3 settings with GSmartcontrol