I know you're joking but I think this thinking is as silly as being a weight weenie.
If you don't care about weight at all ever you will end up with a very very heavy bike. Maybe that's OK for some people but for riding in a group in hilly Seattle it's not fun.
Weight should not be something you think while riding, but while building or planning it's perfectly normal and reasonable. Caring about it to the point of abandoning said reason and abandoning higher priorities (safety, durability) is also silly of course.
Why the rant? I guess I just think people should be able to ask how much a bike weighs without getting remarks like "like a certain NY jewelry shop, if you have to ask.." or "put the scale back in the bathroom."*
So I say while building - ask away. It's a major financial investment and you should be happy with the results. Once built: just ride.
- Ryan
* side note: I'm really tall and actually pretty skinny to the point that I gained weight after getting in shape.