I wear gloves every ride every time. My gloves help reduce numbness and also come in handy for an unexpected spill. Usually the first thing to hit the ground on a spill in the hands and my gloves have saved my hands twice so far.

I only get numbness on longer rides like 15+ miles or so. I have mechanix impact gloves and they really absorb some of the shock. I remember doing a commute and forgot my gloves and within 10 minutes my hands were getting a little dumb.

Hand numbness has some to do with bike fit, but that's a different topic, but all in all, hands get numb on all bikes after time. Gloves give you some more cushion and a safety measure.