I'd get yours cleaned first and then decide. If your DH needs some convincing, maybe get some quotes for new carpet/flooring and then he might be more keen to wash your current floors. Or just get some ads/quotes from others to come clean it.

We have stupid white nasty carpet. It generally gets cleaned once a year and it comes up schmick, it just gets dirty again quickly. Hoping to replace it all one day, but til then carpet cleaning doesn't cost that much anyway.

ZF, i have someone good around here if you want to get your steamcleaned.