It means you are happy because you are at home.

In a family wife and husband live in understsnding with eachother that brings sweetness in home.Is it ot HOme sweet home

actually ,i don't know the answer exactlly ,but i know the meaning . specific content , according to the environmetn i think

Home, Sweet Home (Foyer, doux foyer) ou bien (Maison, sucrée maison) est une locution traditionnelle anglo-saxonne évoquant la Douceur du foyer domestique où nous y retrouvons : Confort Moral, Entente, Tendresse et Confiance mutuelle.

"Home" is more than just a house where you live. It's family, friends, community, local customs and foods, knowing shortcuts to the market, knowing where to get the best prices, being able to give strangers directions, everything that makes it unique to YOU.

If you go away for a long time that warm feeling you get when you return is you thinking, "Ahhhh, I'm back home, Home sweet Home".