I don't miss anything about my Amigas when I'm using them, because I know their limitations and I'm happy with that.
The same applies to my PlayStations, Saturns, DreamCasts, GameCubes, etc. and even to my old PCs, of which I have several.
When I start seriously missing features on my latest computer or console, and it can't be upgraded, I shall replace it. And then that machine will join the other old machines, on which I can perform the tasks I'd rather not waste my new one trying to do.