x86 is a steaming turd.
The reason we're still using this ancient piece of crap is because:
- Intel kept on cranking up the GHz to match the more power-efficient RISC chips,
- AMD went ahead and jerry-rigged 64-bit support onto the crappy x86 processor.
- Windows took over the desktop market, and it mostly runs on x86.
Points 1 and 2 turned x86 into a crappy but capable trashware processor capable of mimicking what the good processor archs were doing. Point 3 menat that x86 took over the desktop market, while the RISC alternatives began dying off, with Apple being the last one to vacate the PPC arch. Intel tried to move on with Itanium, but it failed in its first attempts and AMD seized the day with their jerry-rigged x86-64. Ironically, competition killed the path out of x86, while lack of competiton was what stuck us to x86 in the first place.