carrying but not for long, never seen a programmer wary of to carry their current Macbook Pro few floors down the lift and then walk to meeting room. If you start feeling the weight for this little, problem is not your laptop. And, I am all for lightweight if that does not include compromise in battery life and performance.

I don't think I said that people have trouble carrying their laptops. No one really had trouble carrying 10 lb laptops either but it's quite a bit nicer to carry a modern lighter laptop.

Forever people have said that they would prefer a heavier laptop with a bigger battery and for better or worse, companies have generally ignored that. I don't think it's really a "pro" issue either way.

The scenarios you describe are not that bad. People are just fine carrying a few pounds around.