A home should be the one place you can be at peace and feel comfortable. It should offer a clean and welcoming atmosphere. When spouses have contrasting habits around the home, it can cause a lot of tension. For example, if one spouse is organized and clean and the other is a total slob, problems will arise. The spouse that is organized and clean will feel a lot of stress. The spouse that is a slob will be irritated when their partner nags about their bad habits. The slob will unlikely even get the reasons why living like a hoarder is not a good thing.
Being a slob contributes to a lot of problems, not only in the marriage itself, but for unsanitary and unorganized conditions. A home that is unorganized means spending a lot of time finding things you need. That time could be better spent on what matters. A home that is unclean, littered with food wrappers, dirty dishes, etc. contributes to foul odors and pests such as mice and roaches.
Many couples work outside the home. This doesn't lend a lot of time to clean the house. But, working outside the home should not be an excuse for bad habits. It only takes a moment to throw food wrappers in the garbage can. A few minutes each evening is all it takes to pick up items around the house. You and your spouse can choose one day a week to do a good cleaning and do it together. This not only will help improve the sanitary conditions of your home, but will improve your marriage.
If you are a slob, ask yourself how important your marriage is versus maintaining your bad habits. Even if you weren't married, should an adult live this way? As adults you have the responsibility in living as an adult. That means taking care of what you have been blessed with. Above all, your marriage should be important enough to admit to your bad habits and make changes. Your marriage will improve as will your home's atmosphere.
"A good home must be made, not bought." - Joyce Maynard, "Domestic Affairs"