Virtually anything of couse just means 'not everything'. As a sideproject, I'm building a keyboard, try that in software. Besides, software is sometimes just to

Virtually anything of couse just means 'not everything'. As a sideproject, I'm building a keyboard, try that in software. Besides, software is sometimes just too slow. There's a reason you have a GPU (yes, it can be programmed, but my point is that it's separate hardware). Certain algorithms are just much better suited for hardware implementations since everything runs in parallel at a very fine-grained scale(cryptocurrency mining for example - the main reason that people are mining with GPU's is that the ASICs are so popular that it's hard to get them).