Does every thing that has worked for a hundred years have to be changed?

If it isn't broken then why do you need a new one? Are you getting a new one just to keep up with the Joneses? As I was doing homework with my grandson he let me know that the way I was showing him how to multiply two double digits number was wrong. He started drawing square boxes and I was the one learning a new way to multiply. But honestly, after a hundred sucesssful years of how to do multiplication problems, did it need to be changed? If your refrigerator breaks you buy a new one. But nowadays some people buy one just to have a different colored one. They don't even donate it to Goodwill so it can help someone who needs one. Instead they throw it out to the trash. Why would they think it was okay to fill our already over filled landfills instead of helping a family who desperately needs one? And when they notice you have had something for decades they ask why you have them still. My answer is, because there is nothing wrong with it, so why wouldn't I. In the good old days one parent stayed home to take care of the kids. Nowadays both parents have to work to keep up with the Joneses. A home becomes simply a storage place to hold all the stuff they have to work hard to make payments on. Really?