Good quality wool can last decades with basic care. It’s not as stain resistant as some synthetics, but with fast attention most things other than ink etc will come out. I have successfully got red wine out of my bone coloured wool carpet - but I got to it before it dried.

Wool is has some incredible properties around moisture regulation, resistance to wear and crushing and resistance to picking up smells.

If you can afford wool, go wool or an 80% wool 20% nylon blend.