your next upgrade cycle is 4 years away!
70D had a 2.5 year lifespan.
4 K computer monitors and capable hardware not exactly cheap , approaching gaming spec hardware
yup. Consumer level camera footage is expected to be edited on consumer level hardware.
we don't need automobiles, we need faster horses...
not even really sure what you are trying to say. If you need a 4K automobile, get a 1DXII or wait a few months until the 5D iV is announced. In this case, the 80D is the horse and it's moving pretty fast.