Carpeting only looks good for so long. Instead of replacing it, consider what might lie beneath. Could you possibly have hardwood under there? Even if the floors need some refinishing, you can really update and freshen a room with gleaming floors and perhaps a new area rug.
Natural substances for floors such as tile and wood are always a classic way to enhance your home while offering good durability. If you're not sure what condition the floor underneath the carpet is in, start small-pull up a section under a piece of furniture or in an unobtrusive spot to check before proceeding. Some floors were covered for a reason; be prepared to consult a pro if yours is one of them!