Each year equipment fails and can not be repaired. Already, prices for used equipment is high (and NOS is laughable).
I don't know if I accept FPGA based systems as anything other than a hardware vased emulation, but the FPGA Arcade and Natami seem more realistic than hoping to keep a dwindling pool of hardware working forever.
And I can accept emulation for most old software (when or if its needed). I frequently move to new software when it presents better/enhanced features so there isn't much legacy software I need to run (just some stuff that's fun).
When you think about it, no matter whether the name is AOS4, MOS, AROS or even Windows they don't run Amiga apps natively, they emulate legacy systems in order to do it.