I've weighed my bicycle . . . I know he is 27 lbs . . . and I'm OK with that.
And then I proceed to add all sorts of extra weight ... my Carradice and handlebar bags!

I'm rolling down the road with probably 40 lbs of weight . . . and I'm OK with that too. In fact, I can hardly imagine riding with any less weight than that. I have my doubts that it would make much difference in my performance.
.