When properly installed and sealed a decorative, low maintenance, concrete floor should last a lifetime and will never need replacement.
Few flooring materials can boast low maintenance and longevity. Carpet, tile and even wood floors eventually need replacement, which uses up resources and creates waste disposal problems. If you stick with a neutral color palette for your concrete floor, it will easily accommodate any future changes to your interior décor. Clean up is usually done with a neutral cleaner, or a simple mild vinegar and water solution.