Weight should never be a concern with staying alive, there isn't a swinging dick on here that hasn't begged, connived, pleaded, hoodwinked his way into gladly hoisting a 120lb woman up in the shower and hammering himself stupid! and will every damn chance he gets.
Carrying extra ammo could be the difference in getting to do that again, not to mention being alive to watch out for that woman and kids for the remainder of your life, the Copper gun thread about so many NOT carrying damn near put me in a ""stupid"" coma, and that doesn't take much btw.
comfort? fu-k comfort, stay alive, rest when you get back to the damn house.