I'm trying to figure out why people care so much about the difference between 4 and 4.5 pound laptop? They are still so much lighter than the old days, both ext

I'm trying to figure out why people care so much about the difference between 4 and 4.5 pound laptop? They are still so much lighter than the old days, both extremely portable, etc... Not to mention the weight and tangle of all the dongles and needing to store them when moving around....