You insulate your home so that you don't waste energy with heating or cooling. The insulation helps slow down the transfer of energy between the inside of your home and the outside of your home. So,...
Because the insulation doesn't let heat escape, so your house will be warmer, and if you live in a colder climate, there will be no or little icycles on your house.
It'll change because these people insulate their homes with money Schmid also recommends people insulate their water pipes, insulate their windows with thin, clear sheets of plastic, apply removable...