Everything in your house most certainly require cleaning. Some things require more attention than others, though. If you have carpet at home, you can see how much attention is needed. It will encounter more stains, dirt, and dust throughout its life than you can count. Those are just some things you can see, too. There are plenty of other issues you won’t realize.
You’ll probably hate vacuuming it every week to keep it fresh. Thankfully, you do not have to do that work on your own. Here in Santa Barbara, you can easily take it to a carpet cleaner and have them deal with the issues. They might even be able to do more than you usually can.