The way you do things at home is informed by the household you grew up in and the home habits you’ve created on your own. Moving in with someone is like being a tourist in another country where you speak the same language but have very different cultures. There may be significant overlap but also a culture clash about differing home routines and preferences – some of which you reject (and squabble about!) and others which you come to embrace.
Here are a few formerly-foreign home habits I’ve taken up from my husband (and let’s hear about yours…).

