corrupt itself and need to be manually reinstalled
In my experience that's normally the fault of third-party software, and otherwise quite easy to determine and avoid/fix. Now OSes with more protections just hide those bugs, causing most software to regress to a barely-working state.
I ran 98SE as a daily driver from late 1999 until 2010, and it was reinstalled at most 3 times, not even coinciding with hardware upgrades.
In my experience that's normally the fault of third-party software, and otherwise quite easy to determine and avoid/fix. Now OSes with more protections just hide those bugs, causing most software to regress to a barely-working state.
I ran 98SE as a daily driver from late 1999 until 2010, and it was reinstalled at most 3 times, not even coinciding with hardware upgrades.