I just figure giving them normal human shoes would be too plain. It would hide a detail that makes furries "furry". So the the toes of the shoes are removed so the paws can be more free. Kick with your claws! But also be protected from spikes and rough terrain! it's cute right? And paw prints where ever you go!
I also drew up the footwear my guys have. Vent and Thanto don't wears shoes, but they wear sandals. And Drell's feet are too big for footwear at all.
I don't really do sketches much. So I based it off those solatorobo commercials. I think they're cool.