Security updates don't really do squat in the realm of reassuring you that you're okay, and definitely wouldn't even be a thing if we had comprehensive document

Security updates don't really do squat in the realm of reassuring you that you're okay, and definitely wouldn't even be a thing if we had comprehensive documentation of the underlying hardware/firmware these bastards are running on. Software/hardware gets better with age, but only with full disclosure and a full, unblack-boxed picture of what you have to work with. God, how I wish for a modern, fully documented, fully public Mobo+Processor+chipsets of reasonable oomph. Kill the firmware blackbox, and watch the quality that can be bootstrapped. If I live to see the day when the leading cause of electronic equipment retirement is "50th time reflowing solder, and oopsed", I can die a happy man.