You're in heavy company if you speak to people with fully loaded commuters. There are ultralight commuters, but ultralights IMO are not everyday commuters, only fair weather commuters.
My hybrid Giant Cypress SX that stock weighed something like 23 lbs is now somewhere around 37. Can't remember if that's with all the stuff I carry to work. I think it is. Must be.
On clear days without chance of precip, I have a single speed road bike that I use with a messenger bag. It weighs about 18 lbs, but then my messenger bag probably weighs 10 lbs on my back.
I enjoy both. The heavy one is perfect for those days when the weather is bad. The single speed is fun on the other days. But the 18 lb difference doesn't seem like that much.
Nice Soma!