[jltsiren]

Weight doesn't really matter with modern laptops. They are almost universally lightweight.

I'm from a generation that walked to the school with a backpack full of books. I also enjoy hiking, which often involves carrying a backpack much heavier than your typical office backpack. When I take my office backpack, I have to double-check that the 16" MBP is there, because I can't tell it reliably from the weight. While I prefer small backpacks and avoid carrying unnecessary stuff, the laptop just doesn't contribute that much to the weight.

Physical dimension, on the other hand, matter. A 16" laptop can be inconvenient in tight spaces such as train/plane seats.