People will mention new libraries requiring 64-bit or to reduce the installed size of macOS but I think both of those explanations are (mostly) BS. Microsoft h

People will mention new libraries requiring 64-bit or to reduce the installed size of macOS but I think both of those explanations are (mostly) BS. Microsoft has an unhealthy obsession with backwards-compatibility due to their enterprise market base. Apple has the opposite problem, where they consistently remove legacy features (in many cases, features that are not even "legacy" in nature but required for normal usage scenarios) without giving users a chance to catch-up. Sometimes this is warranted, as it is with removing optical drives, other times, it is not -- such as dropping 32-bit support when neither Windows nor Linux have any intention of doing so in the near future. This philosophy been accelerating in absurd fashion lately, whether it's dropping the headphone jack from the iPad Pro, the "butterfly keyboard," or leaving the MacBook Pro with no USB-A ports or SD card slot -- two extremely well-adopted technologies that are still ubiquitous nearly half a decade from the release of the all USB-C MacBook Pro.