Stuff happens. Someone got a bad build duessenberg in the day, too.
Sometimes a system is cursed. Have seen 2-3 PC's over my life that were fully replaced and still had gremlins.
I own or have owned. . . 6 Macs. Only one ever had problems. Had to bring it in 3x to get it fixed. It was a bizarre glitch in some wire.
One Mac and you think they all suck is a small sample set. But you should be at the "replace this machine" level at 6 trips to the store.
The truth is you're the weak. And I'm the tyranny of evil men. But I'm tryin', Ringo. I'm tryin' real hard to be the shepherd.