It probably depends on the person, but I used to be fine with my Aurora, which is roughly 30 lbs with nothing on it. After I got my fixed gear, which is around 20 lbs, I couldn't stand riding the Aurora anymore. It just felt so slow and sluggish... Now I have the Bianchi which is also around 20 lbs. Between it and the fixed, I just have no desire to ride the Aurora anymore, it's just not fun and my bike commute has to be fun or why bother..