There are plenty of logical reasons to not like x86. I prefer my Tetra K1 development board from my job for work many times over my howling dual Xeon system, which, since getting the board, isn't being used as much.
Why don't I like x86? Number of reasons:
High power consumption, heat generation etc ( My workstation howls like a jet taking off )
Patent protected, poorly documented/supported SIMD instructions for C compilers
Glitchy, unreplaceable EFI that won't boot Linux BSD correctly
Expensive, compared to my ARM boards.
x86_64 assembly is harder to debug, read and program for, and you have to deal with useless addressing modes such as real mode.
I really like my ARMv7 A8-Cortex BeagleBone and my ARMv8 Tegra K1 I use for work. They aren't perfect, they aren't going to blow you away with power but they're wonderful, inexpensive computers that do more than my workstation does with a lot more power.
Now with OPENPOWER, OPENSPARC, and various MIPS CPUs abound building a less expensive, open source hardware board that does what is needed should be possible. I'll consider the Apollo 68k designs good when they have them running on a dedicated ASIC or built as a CPU. As I said, A-EON should partner with TYAN to adapt some of their CPU designs to a newer, less expensive AmigaNG system,since TYAN already manufactures POWER hardware.